If someone is looking for an alternative, use the clangd extension. It’s much better compared to the Microsoft one.
LLDB extension is good for debugging. Also works with gdb.
The only things I am lacking now is the one for remote, python.
I am trying to figure out how to get zephyr, platformio, and nrfconnect to work with clangd.
Platformio screams every second because Microsoft's tooling is a dependency.
Zephyr and nrfconnect work for many things, but things like including drivers from zephyr/drivers doesn't autofill which is annoying if you are searching for a driver that might exist in nrfconnect or might not because there are some differences. It also doesn't autofill macros and device tree defines.
If anyone has a good guide on how to set up clangd for zephyr, I would appreciate it!