Liftoff is working okay for me but with what I'm putting below Jerboa also works decent. And don't forget that Sync for Lemmy is coming.
(Stolen from elsewhere and better then nothing.)
Get this: https://github.com/SpartanJ/ImgurViewer
Go to Settings>Apps>ImgurViewer>Open by default>Add link
It will download all the sites it can link. Check everything related to the sites you want and try again. If an app doesn't have a built in handler it should now open that.