What should be my next round 100 attempt?

I stopped playing about a year ago after starting my first job after college. Naturally high rounding took a back seat the past year but now that i’m settled in i’m itching to get back into zombies. going to try for another round 100 but don’t know what map to focus on, i’m thinking maybe ascension or shadows which seem nice and easy to get back into the game with. open to hearing some (solo) high round strategies for these maps or any others since it’s been a while.

I stopped playing about a year ago after starting my first job after college. Naturally high rounding took a back seat the past year but now that i’m settled in i’m itching to get back into zombies. going to try for another round 100 but don’t know what map to focus on, i’m thinking maybe ascension or shadows which seem nice and easy to get back into the game with. open to hearing some (solo) high round strategies for these maps or any others since it’s been a while.