I got into 1400-1600 on lichess relatively quickly but I did that by taking about 15 private lessons with an IM and doing a lot of puzzles. He taught me a solid

I got into 1400-1600 on lichess relatively quickly but I did that by taking about 15 private lessons with an IM and doing a lot of puzzles. He taught me a solid opening that I played going forward which allowed me to beat opponents in that 1400-1600 range and then I basically staled playing the same thing over and over with anyone in the higher ratings not having hard time to counter. Getting past that required significant investments in time and effort. With that I found that it's about that range when playing chess reaches diminishing returns. Everything useful it can teach you about life at a reasonable cost you'll probably know by then. Going forward is more about, well, getting good at a board game. Plus, there's a risk of loss as chess can screw with your head. I's much rather invest time into something like Brazilian Jiu Jitsu which contains all components of chess, has real life application and keeps you fit, social and sane.