Updated yesterday and now nothing is working...pls help

Yesterday I kept getting a local router error message and couldn’t get anywhere until I updated. Once i updated i was able to get into my sites again and then it wanted me to update virtual box which i did and then today it says can’t reach virtual box kernel or whatever and local by flywheel is stuck on checking system. I deleted everything and reinstalled local…still doesnt work. Furthermore I can’t even install virtual box the installation fails every time. What can i do? Thank you!