I personally hate this customization part too, or better said the lack of documentation and tutorials for beginners, it’s like everyone knows how to do it already and you are coming late to the party.
I’ve personally switched from VSCode about half a year ago to NvChad first, then for some reason that I don’t remember anymore to AstroVim.
Overall I like it, especially since the only things I need when writing elixir is code highlighting and the language server, however I still cannot get used to things I used to do easily with a mouse, like copying multi-line text.