Okay, so I started a new account on sword and I know the den to get feebas in needs to be purple and you need the bike upgrade so you can surf on water. My problem is that once I get the purple den up all I get now is 3 and 4 star raids. Can I get the upgrade too late or what? Im so confused. Pls help
As best I can tell, you can't. The game seems to stop showing 1 star raids after you collect 4 badges, which is before you get the bike upgrade, so Feebas raids are just inaccessible, unfortunately. Your best bet would be to either hunt for a Milotic raid or go to Route 2 and catch your Feebas there.
Hope this helped!