I just bought a used laptop that came with windows 11. After all of this data collection crap it started blue screening after I installed the first set of updates.
You should be able to get some improvements if your phone and headphones support LDAC or AptX HD. How perceptible this improvement is is debatable. IMO it wasn't worth the 75% reduction in battery life for my headphones.
LycaMobile blocks both hotspots and VPNs in Europe. I made the mistake of buying a SIM from them once.