At your level (which is a bit higher than mine) you're better than 99+% of online chess players and have a fundamental grasp of the basics of the game. At this point improving chess depends on your particular weaknesses.
Beginners need to study tactics because all beginners hang pieces like crazy, don't count attackers and defenders etc. etc. Beginners need to learn basic endgame checkmate patterns because all the advantage in the world means nothing if you can't find the mate. Beginners need to learn opening principles, because otherwise they don't have pieces out to execute tactics.
An 1890 will have mastered all of these basics to get to that level. An 1890 will have certain tactical proficiency, but still might be weak on them if they're missing more advanced tactics regularly. Or an 1890 might be a tactical wizard, but makes poor long term strategic decisions and lose games that way. Or an 1890 might be good strategically and good at tactics but not know how to convert certain winning endgames.
If you're unsure what your weaknesses are after analyzing your games get some stronger players to point them out to you.
Thanks for the respones everyone