This is version 24.2?
Did you alos have the previous version and did it crash?
Yes, 24.2 and also last version has the same problem too.
Sorry about this trouble. I am hopeful that the issue was fixed. If not, we have recently released an update for Illustrator 2020 (v 24.3) which contains some stability fixes. If you are not already on v24.3, then we recommend you to update to latest version.
If that doesn't help, try steps shared in this help article and share your observations with us.