Debugging is kind of a weak point in vim to be honest, there is a plugin called termdebug which comes bundled with vim that can do gdb debugging ok, but anything more complicated mostly just feels like a lot more work and a bit more jank than just using vscode.

I use just as well, it's a more vimy approach than something more tightly integrated so that makes sense.

Helix is nice, but I don't think I could leave behind some of my vim plugins, fugitive in particular is an integral part of my git workflow. Haven't used the kakoune editing model enough to really decide if I think it's better than vim personally.