I want to be able to multitask on my phone while listening …

Needs native app for that I believe. Hear you.

I think with the right browser this works.
But if you cancel the window the resume point will be messed up.
Try it with opera which also works on YouTube without premium ;) or FF

Mobile browser needs to be in desktop mode for this to work

Thank you @255. I appreciate you... 🙏

Interesting 🤔
I’ll look into that. Many thanks @74