I'm horribly bad at endgame. Please help...

i already am reading logical chess. and without completing it i dont think ill understand those complicated words of other books... but till then i need some quick advice. i cant just keep losing you know...

there was no way to stop it so from promoting so i just played a forcingg move

i missed that win bcz i thought i can take those two pawns after inactivating his rook and bishop... sadly it didnt go as planned

Hello i was bad like you in the endgames and what helped me a lot was youtube you can find there some really good videos if you dont want to bother with books like me i recommend you to go watch some akobian videos (im not a pro i play mostly for fun but i can tell you that it really helped me and not only the endgames videos but also middle games/openings since there im more mature in chess

HEY JUST A TIP FROM ME, when you are at a advantage, even by just 2 points and you are drifting to the end game, just trade off all pieces as much as you can, that would magnify your advantage and force you to win except if your mind is elsewhere like xvideos n stuff but try to focus keep your cool n trade off all bishops knights and pawns especially. Cheers

I was going to suggest something similar to what Fork_Master is saying. When you're ahead in material, you can consider giving some of it back to simplify into an endgame that is still easily winning. You had just such a chance to do that in the second game you posted. Hopefully when I post this you'll be able to see the moves I made and not just the position, the diagram feature has been buggy for me lately.

And if the White King stays around the queenside to try to keep you from winning his pawns, that's when you can start pushing your h-pawn up the board.

I can understand a desire to focus on the Chernev book for now, but you might want to consider the Silman book that is designed to be read in installments.

"... I'm convinced that Silman's [Complete Endgame Course] will take its place in history as one of the most popular endgame books ever. It has already caught on with the average player in a big way, confirming Silman's status as the king of instructional writers. He writes in a clear and casual style, and time and again has shown the ability to reach those who feel intimidated by the lofty approach that a grandmaster will often take. ... Silman ... defines what he thinks is necessary to know at specific rating levels. For example, the beginner or unrated player needs to know ... Silman's idea is to wait until you climb in strength before you worry about more advanced material. Then, as a Class 'E' player (that's 1000-1199), one must learn ... Silman's book emphasizes to the student that the important thing is to master the strictly limited material at hand, rather than get confused by endings that won't help your results at that level. Perhaps even more importantly, Silman is able to use his teaching experience and talk to his readers in a way that they can handle, in a friendly manner and without condescension. ... I'll also repeat the point that David Ellinger in ChessCafe makes: '[This ...] demonstrates who this book will truly serve best: anybody who coaches chess. For me, as a perpetually near-2000 player who does part-time coaching, I’ve got in my hands a great resource that will have something for every student, no matter the rating.' ..." - IM John Watson (2007)

http://theweekinchess.com/john-watson-reviews/theres-an-end-to-it-all

"... if you have just learned to play, all you need to study is the section designed for beginners (Part One). After mastering the material there, put [Silman's Complete Endgame Course] away and spend your time studying tactics and a few strategic concepts, ..." - IM Jeremy Silmam (2007)

http://www.gambitbooks.com/pdfs/Fundamental_Chess_Endings.pdf

almost everything that was said is good advice and your play isn't bad imo. I will just add a small very important piece of advice:

at the beginning of the endgame, never underestimate the power of advanced/passed/connected/pawns_in_general yours or your opponents. imo, that is much more important even than king activity. It is the most important thing when the endgame starts. Which pawns are scary close to promote (because they are passed or advanced or connected or are in a majority) and which pawns of yours can do the same? Can a side promote first? Usually, I play pretty good in endgames, even with very few secs left, but I have lost many games because of this. I have lost many games, because I underestimated the opponents pawns and their potential to promote. I have lost many games caring about my King's activity and restraining the opponents King's activity, while forgetting that.   

Another piece of advice I can give: learn king and pawn endgames first. All other endgames can simplify down into a king and pawn endgame (unless all the pawns get traded), so it's important to be able to evaluate these positions and know whether or not to trade down. For instance, with White to move in the below diagram, if you can't tell at a glance if it's safe to trade rooks, your endgame needs a lot of work.