How to Change Background on Wix Website (in 2022) | Wix Change Background

Looking for guidance: My crypto on OKX Contains Some Web3 wallet USDT, This is my seedphrase: (truly dismiss monkey orange torch absent critic fuel mountain round parent describe)- How should I proceed with sending them to another wallet on Binance?

I have a Problem with that Funktion. My Video i want to use in the background, is filmed by an iPhone in 4K Resolution But on my Site it hast terrible Quality

Didn't even cover on how to change the background. That's editing a section....... What are y'all doing over there and what happened??