how to improve?

i am new to chess, dont know how to get better. mass games, studying theory or something else. maybe u can suggest me what books to study or what foundation i need in general, i would appreciate your advices. thx!

As a beginner you have are very good ranking. It all depends on your ambition where you want to get. "Amazon" is offering a lot of literature for all kinds of players as any bookshop does. I think you can learn a lot of studying the matches that Lichess offers and play, play, play..........!!!!

We can give general advice (which is also available on Google), but it really depends on what kind of player you are (the way you play, the way you think, your ambitions, et cetera).

I joined lichess few days back, I am still a beginner but still i would give you a suggestion watch vidoes from youtube about openings and then try to implement them by playing here and then analyze it. It will give you idea about how to think about moves

I think this link can be of good use.
Download their software and try the mating training module.
http://lucaschess.pusku.com/index.htm

Thanks guys!

I'm too lazy to practice it myself since chess is only a past time game that I don't take seriously, but like all things, you get better by practicing and practicing. If you want to go beyond you might want to study openings, but don't just memorize them, know why each move is doing. Also look at games of grandmasters, compare your moves or what you would do in their position to hat they actually did and find why they did it. Kingscrusher is a very good youtube channel for those that are really interested in chess. For me, his videos are boring because he analyzes every move and explains a lot, I don't really like chess that much, but if you don't like chess that much like me, don't expect to be good at it unless you are gifted.

Play 10+5 or 15 min, allways pick random and play people your rank or higher.
There is a lot of material on YT for beginners and intermediate players: chessnetwork Matojelic and Kingcrusher
Stay away from bullet games, they don't help you improve at all.