Photoshop brushes

[#1]

 I use a mac and have photoshop 2021 and after fixing one issue, another occurs. After a recently update on my photoshop i lost the previous brushes i had downloaded and when i tried to download them again, i couldn't anymore. The .abr files will load for a second but not dowload at all. 

[#2]

 I use a mac and have photoshop 2021 and after fixing one issue, another occurs. After a recently update on my photoshop i lost the previous brushes i had downloaded and when i tried to download them again, i couldn't anymore. The .abr files will load for a second but not dowload at all. 

[#3]

Can you show us with a screenshot what happened? 

Chana