It is toxic to believe that you cannot reach proficiency in chess.
Believe in yourself. More is in you.
"Having spent 200 hours on the above, the young player, even if he possesses no special talent for chess, is likely to be among those two or three thousand chessplayers [who play on a par with a master]. There are, however, a quarter of a million chessplayers who annually spend no fewer than 200 hours on chess without making any progress." - Lasker
Per Lasker 200 hours of the right study are enough to play on par with a master, say 2000.
"Players under 1800 blunder almost every move" - Carlsen
So per Carlsen just eliminating blunders is enough to get to 1800.
If you just adopt the mental discipline to think about your move and then check that your intended move is no blunder before you play it, then you get 1500.
It is doable... I'm also not a prodigy and didn't study too hard.....and I went from some 700ish to 1500 in about a year.... I would watch some chess videos, do some puzzles and play some 3-4 rapid 10 min game a day... But I did spend 1-2 hours a day on it (let's average it to 10 a week)
As mentioned, if you just don't hang anything you can relatively easily get to 1000-1200, because your opponent will most likely blunder and hang a piece... when he does you just capture. Granted you must know basic checkmating patterns, basic endgames, opening principles, a little bit of tactics and how to convert material advantage into a win and you're set... once your opponent blunders and gives you that free piece you capture, then you trade it down into a winning endgame
But also, don't be setting rating goals, especially ones that high... that definitely doesn't help... one thing that helped me is because I was having fun and enjoying the process.... I don't get paid for it, there's no reason in stressing, it's just a hobby (even though sometimes the tilt is real... especially when I used to care about rating and was close to making it to the next 100 and did a stupid blunder)