Comment by thisisharsh7

you can use a multipurpose bot like sapphire https://sapph.xyz for moderation, anti-spam, logging, and automations.

to reduce junk, spam stuff you could try adding onboarding/verification questions before granting access also can se AutoMod + keyword/link filters and rate-limit new users

this won’t remove 100% of spam but it'll drastically reduce it some manual moderation will still be needed.