Errors with OS catalina

Since installing Catalina on my MAC (27" Retina 5K, Intel Core i5 3,2 Ghz, 32GB 1867Mhz DDR3, AMD Radeon R9 M380 2GB) the apps are not openning well. The task manager says they are running (appear dotted on my dock), no "not responding" message on the Force Exit; but nothing happend. No app on my desk. 

Many times I have to restart the computer and then launch the app again. 

Can you give me some light on how to fix it?

THX, 

Enrique