I think it's worth mentioning tldr as an effort towards more readable man pages: https://github.com/tldr-pages/tldr

Personally I like tealdeer for a tldr client b/c it's written in Rust and I think the name is fun, but the other tldr clients I've tried all seem fine as well: https://github.com/dbrgn/tealdeer

tldr doesn't do autocomplete, but between fish shell's autocomplete and tldr I feel I'm able to figure out most simple commands in the terminal.