I am a bit cautious, but try to do things I enjoy most. For going to Goodwill, is it possible to go to during their slowest times-you could ask what they are. If an aisle is crowded, go to a quiet aisle until people move on. Keep a mask in pocket for checkout lines or if someone gets close. That minimizes time masked. I loosely try for 6'. That's how I manage shopping though if I have to go when it's crowded, I mask. It's quiet pretty often though.

For Kingdom Hall, could you sit in back? Maybe speak with leader/minister about concern? I hope you find solution.