whenever I tap on my game, it says buy or renew prescriptions but I bought the one-year...

One year of game pass is not sold anywhere, chances are that you bought a year of gold which then would've converted to I believe three months of game pass

whenever you buy gold from the console via the dashboard it will turn on auto renewal by default and unless you turn it off before the next renewal it will charge you for another subscription depending on which one you got (you buy a month it renews for
a month after month, a year it renews for a year after year etc).

Hello I'm Daniel,

Contact xbox support they'll be able to sort out your problem.

https://support.xbox.com/en-US/contact-us#0

Whenever buying q game buy the one you really want

Or suffer the consequences and buy each.dlc separately for more

Not everyone knows beforehand what version of a game they are wanting to buy...I was the same last year: Played the Forza Horizon 4 demo, loved the game so bought the Standard version as I never planned to buy any of the DLCs...then started playing with streamers and they spent most of their time on one of the DLCs so bought it...and then bought car packs etc as well. However, my plan was never to buy any of that stuff.

Sometimes you may not know how much you will enjoy a game so just buy the basic version.....after all, it's not prudent to simply buy the Deluxe/Premium version of every single game you buy.

I prescription glasses, so the gaming glasses are very expensive if you have a prescription. I know I won't use them.