Where did the athletes spend all the months before the games started. ?

Answer 1

Generally they were at their homes.

Answer 2

The vast majority of them isolated at home along with most other people.

Answer 3

Collecting unemployment and waiting for stimulus checks?

Answer 4

Staying in shape......

Answer 5

some stayed in their respective spring training sites and kept practicing until the games got started.  others went home until a plan was agreed upon and stayed ready there.