I used to use CLion but it was so slow and clunky. The best C/C++ development experience I've ever had is VS Code with the clangd extension (and it's free as well).
For me both VSCode and CLion lag heavily.. whenver I tried CLion it was completely unuseable on my project https://ossia.io which is only 500kloc (and I try to try it pretty much once a year since it was in beta)
I’ve tried them all (nearly ;) ) and I always miss Visual Studio after a while. With Clang Powertools I’m the fastest with it than anything else so I’m always surprised how little love it gets on here. Maybe because fewer devs have Windows these days.
Vscode is missing showing the call hierarchy[0]. And in addition to the mediocre debugging experience compared to Intellij products, I would definitely rank it as one of the worst C++ IDEs available.