I keep seeing EMacs,Vim, and Neovim recommendations, but I’m out here recommending people use Geany. It’s honestly the best code editor I’ve ever used since its 2.0 version was released. I have it setup with a debugger, an lsp, tree browser, a nice theme, etc. and it’s basically perfect. Free, open source, perfectly customizable, what more can I ask for <3

Edit: just want to say for those ppl already using Vim, it does have Vim mode. So, I think most of the hotkeys should work but I’ve only used Vim a couple times in my life, so I can’t vouch for how well Vim mode works.