Are you using an Arch based / rolling release distribution? Last week there was an update to glibc that broke a lot of electron apps. I don't have a solution for it other than downgrading to before the update goes out or waiting until the itch client gets updated with a newer electron version. (Arch repo archive on 2022/02/14 works for me)
Here's a github issue with a bit more info
https://github.com/itchio/itch/issues/2771
Edit:
turns out you can run itch with the argument --no-sandbox as a temporary workaround