I've done this with YouTube and it's been extraordinarily effective for me. Without the history associated with my account, the recommendation engine just shows me the default junk, preventing me from falling down rabbit holes when I just want to watch some video. For keeping in touch with channels that I still want to follow, I've subscribed to them via RSS.

If you need an extra push to enforce that you only use private browsing, you can install any browser extension that blocks sites and then tell your browser to not permit that extension to run in private windows.