I had a similar issue, after cleaning up a Windows machine for someone else, making sure Firefox with uBlock was running. I took a look at it a few weeks later and there was some bullshit Microsoft Bing search bar or AI thing on the toolbar. Wiped, installed Linux.

Microsoft is setting fire to the bridges and those will be users which they will never be able to get back again.

Linux works great for gaming except some anti-cheat stuff which probably won't be legal anymore anyways in Europe under the PLD.