How do I customize Bitcoin Core’s mempool policy to ensure that low value transactions (ordinal, BRC-20) are not propagated by my mempool?

How do I customize Bitcoin Core’s mempool policy to prevent low-value transactions (ordinal, BRC-20) from propagating to my mempool? I compile full node from source, so I’m interested in editing the code before compiling the client (if possible) and configuring a standard client to implement those policies. Some time ago I heard something. youtube The idea is that someone has already modified Bitcoin Core to implement it. I couldn’t find a repository for such a project anywhere. If such a project already exists, I would like to know what the files for Bitcoin Core are and in what way they have been modified.

PS Despite having good knowledge of other languages, I am only a beginner in C and have no experience with C++. I would appreciate it if you could explain it like a beginner.