Krita is not available for Chrome OS but there are a few alternatives with similar functionality. The best Chrome OS alternative is Clip Studio Paint. It's not free, so if you're looking for a free alternative, you could try Gravit Designer. If that doesn't work for you, our users have ranked more than 100 alternatives to Krita, but unfortunately only two of them are available for Chrome OS. If you can't find an alternative you can try to filter for web or SaaS options.
Gravit Designer is a feature-rich vector graphics tool. It is an installable desktop application. It is also a within-browser application for those who prefer this. It has every design feature this writer is aware of within Inkscape, without the recent issues.