Do not use your work computer for anything but work. Do not use your work online accounts for anything personal. Treat them like the spying device they are. 9/10 the company doesn’t have the resources to actually spy on you, but it can all be changed with a single software update
I was at a professional development conference offered by my union yesterday. 3/4 of the presenters I went to were using their management-owned accounts (and in one case, a management-owned device!). Now, none of the topics were about unionism--it was all how to be better at our jobs, but I couldn't wrap my head around it... and they put up QR codes for us to access on our phones, and guess what? The links wouldn't work for me because I refuse to put any work shit on my personal phone, so I wasn't logged into my work account, and therefore didn't have permission to view the document. I just could not believe that people were surprised...