PieFed already provides a HUGE aid to help here, and while Lemmy currently lacks this I believe that a future version is imminent that will help in this regard as well. I am talking about federating mod reports across instances, which will allow mods to remain on their home instance without having to continually check an alt account(s) on the same instance that houses the community. This will increase the pool of available mods for any specific community.

Edit: and this barely begins to scratch the surface of what PieFed offers in this regard. e.g. if someone does not want to see so much Trump or Musk spam, they can use a personal (automated) keyword filter, rather than have to rely upon kids to do all of that work for them. Likewise, users can set personal filters for unpopular content, with more than X downvotes, either to automatically hide it or at least to collapse it, needing an extra button press to see it - I personally have these turned off, but if someone wants them, it is available to them (note how this is different than a mod deciding to ban someone or remove their content: this is a USER decision). Another is the user account reputation indicator, placing an icon next to someone’s username who e.g. consistently receives 10x more downvotes than upvotes - it won’t hide their content, but it is a subtle indicator that helps you realize what you are getting into before you respond (e.g. a sea-lioning situation?)

All of the above literally reduces the amount of effort that a moderator is required to do, in order to make a community a pleasant place to visit.:-) Also, it democratizes the moderation work, placing more power into the hands of users rather than that of centralized authority figures.