Need Help with Viture Pro XR and Nintendo Switch

I probably should've done a bit more research before purchasing these but alas. My main purpose for these glasses are to play on my Steam Deck and Nintendo Switch, as well as watching movies from my iPad.

I assumed wrong in that I could just plug the glasses into the Switch and I would be up and running. Now, reading online, it seems I need a few more items. I can't buy the pro dock as it's out of my budget and out of stock on Amazon in my country. What can I do instead? I want to be able to play my Switch while wearing the glasses.

Any tips or Amazon links are appreciated. I have an Anker power bank 20,000 and thought I could use that to provide power to the switch but I'm honestly a bit lost.