Yes speed decreases are typical. Pick what’s more important to you the speed or using the vpn.

If I had to guess you probably live in a big city in the center. This means when you activate “Show bluetooth devices without names” in the developer settings of your android 13 phone, there appear loads of devices. You probably have no clue what they are because none of them are your devices so why would you know what they are?

Counting Crows