I'm self taught, spent 4 months entirely on my own going through freeCodeCamp and The Odin Project. My tip - only do it if you enjoy it, there's plenty other professions out there with a better ROI on time invested.
No matter your background If you spend a year doing codeforces/leetcode you can get a job that pays $200k. Of course you also have to have some talent at that kind of thing but in almost every other field you'd need years of training and degrees to get salary