Swyping didn't work reliably when I tried one year ago, so I switched back to one of the keyboards of my phone (SwiftKey because I find it slightly better than Samsung's one.) Did they improve it in the last releases?
There is a pull request open which improves the algorithm massively. Author couldn't finish it because of health issues sadly.
I've installed it on my phone and it works great but I had to update some parameters in the code so it'd work.
I'm not sure if they improved it or it just works more reliably with the default theme. But about a year ago it was unusable but now I'm able to use it with only occasional errors.
Of course it's still not as good as Gboard, but I'd rather put up with the slight inconvenience for it being open source.