How to get better?

i apologize up front if this is a dumb question. I’m in my 50s and about an 1100. My best in puzzle rush is 20. I do the tactics puzzle everyday. What’s the easiest way to get to say 1600 and how long can I expect it to take?  And please don’t say something generic like “buy a diamond membership”. Thanks for your time 

Once I saw the word 'easiest.' Then I could tell you have the wrong idea.

There is nothing easy about improving whatever level you're at. There isn't a magic potion or system that can get you better.

The best thing to do is to think to yourself 'why am I losing games.' No matter what it is or whatever excuse you have for making those mistakes work to stop them from happening. For example, if you blunder regularly even though you know you're better than the blunders make you seem, make sure you have a systematic thought process that can prevent them from happening. Or if it's endgames then do some drills on chess.com.

Hope this is of use to you.

So doing tactics every day will help. 

Working on your visualization will help.

Playing over master games will help.

Good instructional books will help.

Improving your endgames will help.

Which of those is right for you? Depends. What part of your game is the weakest? 

https://www.chess.com/article/view/how-to-start-out-in-chess

https://www.chess.com/article/view/study-plan-directory
"... In order to maximize the benefits of [theory and practice], these two should be approached in a balanced manner. ... Play as many slow games (60 5 or preferably slower) as possible, ... The other side of improvement is theory. ... This can be reading books, taking lessons, watching videos, doing problems on software, etc. ..." - NM Dan Heisman (2002)
https://web.archive.org/web/20140627084053/http://www.chesscafe.com/text/heisman19.pdf
"... If it’s instruction, you look for an author that addresses players at your level (buying something that’s too advanced won’t help you at all). This means that a classic book that is revered by many people might not be useful for you. ..." - IM Jeremy Silman (2015)
https://www.chess.com/article/view/the-best-chess-books-ever
Here are some reading possibilities that I often mention:
Simple Attacking Plans by Fred Wilson (2012)
https://web.archive.org/web/20140708090402/http://www.chesscafe.com/text/review874.pdf
http://dev.jeremysilman.com/shop/pc/Simple-Attacking-Plans-77p3731.htm
Logical Chess: Move by Move by Irving Chernev (1957)
https://web.archive.org/web/20140708104437/http://www.chesscafe.com/text/logichess.pdf
The Most Instructive Games of Chess Ever Played by Irving Chernev (1965)
https://chessbookreviews.wordpress.com/tag/most-instructive-games-of-chess-ever-played/
Winning Chess by Irving Chernev and Fred Reinfeld (1948)
https://web.archive.org/web/20140708093415/http://www.chesscafe.com/text/review919.pdf
Back to Basics: Tactics by Dan Heisman (2007)
https://web.archive.org/web/20140708233537/http://www.chesscafe.com/text/review585.pdf
https://www.chess.com/article/view/book-review-back-to-basics-tactics

https://static1.squarespace.com/static/5856bd64ff7c50433c3803db/t/5895fc0ca5790af7895297e4/1486224396755/btbtactics2excerpt.pdf
Discovering Chess Openings by GM John Emms (2006)
https://web.archive.org/web/20140627114655/http://www.chesscafe.com/text/hansen91.pdf
Openings for Amateurs by Pete Tamburro (2014)
http://kenilworthian.blogspot.com/2014/05/review-of-pete-tamburros-openings-for.html
https://chessbookreviews.wordpress.com/tag/openings-for-amateurs/
https://www.mongoosepress.com/catalog/excerpts/openings_amateurs.pdf
Chess Endgames for Kids by Karsten Müller (2015)
https://chessbookreviews.wordpress.com/tag/chess-endgames-for-kids/
http://www.gambitbooks.com/pdfs/Chess_Endgames_for_Kids.pdf
A Guide to Chess Improvement by Dan Heisman (2010)
https://web.archive.org/web/20140708105628/http://www.chesscafe.com/text/review781.pdf
Studying Chess Made Easy by Andrew Soltis (2009)
https://web.archive.org/web/20140708090448/http://www.chesscafe.com/text/review750.pdf
Seirawan stuff:
http://seagaard.dk/review/eng/bo_beginner/ev_winning_chess.asp?KATID=BO&ID=BO-Beginner
http://www.nystar.com/tamarkin/review1.htm
https://web.archive.org/web/20140627132508/http://www.chesscafe.com/text/hansen173.pdf
https://www.chess.com/article/view/book-review-winning-chess-endings
https://web.archive.org/web/20140708092617/http://www.chesscafe.com/text/review560.pdf

I line with what everyone has said here , improving in chess takes affort and i dont know any "easy way"

However in my personal expeience i found that solving tactics puzzles EVERYDAY brought the biggest leaps. You become better at said pattern recognition and you spot similar situations in your games faster and sometimes before they happen. I do my tactics on LiChess.org and here on Chess.com. This article here emphasises what i just said here: https://www.ichess.net/blog/beginner-chess-improvement-work-on-tactics-every-day/

"... for those that want to be as good as they can be, they'll have to work hard.

Play opponents who are better than you … . Learn basic endgames. Create a simple opening repertoire (understanding the moves are far more important than memorizing them). Study tactics. And pick up tons of patterns. That’s the drumbeat of success. ..." - IM Jeremy Silman (December 27, 2018)

https://www.chess.com/article/view/little-things-that-help-your-game

don't care of loses. only care wins. try at ur best.install acid ape chess app from store it contained 1000 free tactics and strong engines..definitely u loves try.app is from belgium.have a great day.

Play Daily games - the games are slower but you have time to think about every move.

I am in my 50's also, so I can relate! If you are up for a daily game (rated or un-rated) send me a challenge. 

If you can, try and find a club where you can play people across the board. I know that's a lot more difficult in the U.S. than where I am because of the long distances.