The only thing I've really struggled with when trying to get into using vim full-time is navigating my project. In VSCode I basically hit CTRL+SHIT+F -> "portion_of_a_function_name_or_something" constantly. I abuse the heck out of global search. Is there a way of navigating your project in vim that's similar/easier?
How do vim people quickly navigate their code without going "what was the name of that file with that function"?
Historically, people used :grep and the quicklist to jump between project files based on abitrary strings and Ctags to generate a language specific index of functions, variables which you can jump to.
These days people generally use some kind of fuzzy finder plugin thats basically the same as the vscode experience. Exactly which one you use depends on various factors, but Telescope and Fzf are two big names and both allow searching through a bunch of other stuff, setting names, edit history etc. (You can also save the fuzzy search results to the quicklist so you've basically got a reusable index).
And neovim is heavily embracing the LSP paradigm, where you'd use something like gd to jump to definition when on top of a function and a language specific LSP server will tell Neovim where to jump to.
This x100. I switched to neovim+pylsp a few months ago, and it's been an absolute delight. I use lspconfig [1] and pyslp [2] since most of my time is spent developing Python code. Not only can I navigate more quickly and easily, I also find myself catching more silly errors before run-time due to better linting from the lsp.
It used to be that I wouldn't use vim beyond quick edits on single files. Although I still prefer to use vim style bindings in IDEs, I can go much further before I feel the need to fire up an IDE in the first place.