You can read more about why Knots and Core both look like they’re installed here.
As for Electrs, are you sure Bitcoin is in a good state? Is it really just Electrs that isn’t working right? Normally when Electrs isn’t working it’s because of Bitcoin.
If it is just Electrs, you may want to look in Electrs → Logs for the exact error and let us know here. We can then suggest a solution.