If you have the motivation, you can probably sit at home and get a basic education by watching You Tube videos. Reading, writing and basic arithmetic, plus every other topic under the sun. Once you learn to read, there are tons of free books available online if you don’t have access to a decent library. Plenty of other reading material available on the Internet too.
It’s not impossible, but very difficult, for an adult to learn what a 6 year old child can do easily. Adult brains are not adept at making new basic connections..........................