Connecting to wifi issues, xampp manager and freezing

My network manager sometimes sees wifi and sometimes not, i have tried downgrading the kernel and reinstalling drivers but it’s the same (I use laptop-mode tools from aur and thermald).
Xampp manager has this issue: i can’t run any server because they immediately turn off again.
And sometimes my manjaro freezes and i have to force the shutdown.

Not enough RAM? No swap device active?