Tusky is finally back in the main F-Droid repository! https://f-droid.org/repository/browse/?fdid=com.keylesspalace.tusky
You can just as well search for "Tusky" in the F-Droid app to find it.
@Tusky Good news!
Server run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!