Hint 1:
Go into the settings and leave only those languages unchecked that you want to read; this should significantly reduce the number of toots you see.
Hint 2:
Mute the authors that you don't want to read. You just hit the "..." under one of their toots and then select the mute option. This is especially nice to deal with news bots.
Now the federal timeline should already be much more readable.
You are most welcome.
@FoloGnorri very helpful, thank you!!!