Lemmy as a whole does not have moderation. Moderators on Lemmy.today cannot moderate Lemmy.world or Lemmy ml, they can only remove problematic posts as they come and as they see fit or block entire instances which is rare.
If you want stricter content rules than any of the available federated instances then you’ll have to either:
Use a centralized platform like Reddit but they’re going to sell you out for data profits and you’ll still have to occasionally deal with shit like “The Donald.”
Start your own instance with a self hosted server and create your own code of conduct and hire moderators to enforce it.