C/C++ have been around for a long time and have great support in Vim. You can build a cscope database (cscope -b -q -k) and then use :cs find -

       - a: Find assignments to this symbol

       - c: Find functions calling this function

       - d: Find functions called by this function

       - e: Find this egrep pattern

       - f: Find this file

       - i: Find files #including this file

       - s: Find this C symbol

       - t: Find this text string

And if you want more you just need a single plugin w0rp/ale and have clangd installed, no configuration needed to get the same LSP support you can get with VSCode.

It also has built in makefile and gdb support.