Citrix Receiver crashes constantly

I depend on Citrix Receiver as a physician to do ALL of my work. But I've had frequent crash problems with Citrix for quite some time, antedating Big Sur, but the crashes are more frequent now in the current Mac OS. I have scoured the internet / community posts to try to find an answer, but I have had no success in solving the problem. Deleted the ctxusb file as recommended by one individual, but this did not help me. Uninstall and reinstall the application countless times. Using a Mac mini 2018v; all software is up to date as of today, Feb. 3, 2021. Citrix support was no help -- told me to contact my local administrators, which of course, is not a useful suggestion -- this is a Citrix problem, not a Mac problem, not a network problem. I've tried on numerous different networks, bypassing any firewall present in my local network; no fix. Any suggestions would be greatly appreciated!