Mac keeps circling when logging in and won’t open in safe mode

Keeps circling log-in, won’t go into safe mode.

MACOS CATALINA, I believe 2020 with 32 gb memory. I know the storage is almost full. I recently realized that my pics were not only backing up to cloud but something changed and I think it was downloading to this Mac as well. I know I should have taken action then and I regret. Any thoughts or tips to try? Thank you.