Have a separate work space from your hobby stuffs (if your hobbies involve computers) or separate computers. Never connect your work accounts to your personal devices. When I had a full-time WFH job, I'd disconnect the office laptop and put it aside at the end of day. No temptation to look at it again, then I'd go row for 30 minutes and run and if I went back to the desk the only option was my own computer. Current work is hybrid, we have lab work so full-time remote is not an option, and this still works for me though the exercise is now cycling.

This is the way. Fully separate your work and personal life. Separate devices, separate accounts, separate physical rooms if you can swing it financially. Never cross the streams. Close your work devices at 5:30 or whenever you are done, turn off the ringer on your work phone, lock them in a drawer or something and just forget about them until the next day.