I made switch back to Windows some time ago, but I notice I use open-source programs anyways and I do not enjoy modern video games which is why I think about switching back to Linux. Below is two issues holding me back from switching right away;

1# What desktop should I use... I used GNOME before but because NVIDIA card it did not perform well. I also tested KDE but it was too complex for me. Should I try Elementary OS, Budgie, XFCE or Mate ? I look for something simple, modern, customizable. I do not have time to test what fits me blindly.

#2 Is there alternative program to simple wall (pp) ? For by default blocking apps from connecting to the internet.