I strongly recommend picking up a physical copy of The Complete Stories of JG Ballard [0]. Great to read through from time to time. Every story is weird and a little depressing, though, so don't read too many at once.
I second this. I don't know anything about his life. But after reading his stories chronologically he must have gone through some shit. There is definitely a certain development in them.
[0] https://archive.org/details/completestorieso00ball