Cubase 10 windows 10 APP Chrasing when installing "addition content"

i couldnt start cubase 10 because it was crashing, i reinstalled like 30 times and tried different solutions, then it suddenly worked when i removed all steinberg programs but Cubase 10, after that i installed everything and it crashed, after that i started testing and here is my results:

if i install “Vst Transit” Cubase will crash before opening the program

so ok, i can run cubase without vst transit BUT these INSTRUMENTS crash Cubase when adding them:

GROOVE AGENT
HALION SONIC SE
PADSHOP
RETROLOGUE

so i cant use any of these instruments, is there any way to fix this??? when clicking add instrument “hallion sonic se” (etc.) Cubase closes!

hope someone has a solution, thanks