Usually it's big actors like Facebook, Azure and OpenAI who bombard my servers without any respect or logic. I need to update my access rules constantly to keep them away (using Cloudflare) Sometimes it's clustered traffic, more classic DDoS, from China, Russia or America. That I could easily filter with the DDos protection from my hosting (which is cheaper than cloudflare anyway)
What should I do if not Cloudflare to block with "complex rules" that is strong enough to survive hundreds of concurrent requests by big companies?