Email aliases strategy for privacy?

I have my own domain name and the regular mailbox.org domain. All in all that gives me 75 email aliases available. I probably don’t need all of them, especially counting on the temporary ones.

Nevertheless, I’m trying to figure out what’s the best strategy to protect my privacy using email aliases. Right now, this is what I’m thinking, but I’m not convinced:

Have a name.surname@mydomain for my primary one. By primary, I may mean only personal for family and friends. Have another one nickname@mydomain for signups on website and forums I trust like Fediverse, etc. Finally, one for junk signups something like notme@mailbox.org. Indeed, for that one, I don’t want it tied to my domain name.

Then comes the question of the other ones. For example, bank accounts. I don’t trust them, but they already have my name, address, phone number and so on, and most likely "share with their partners to enhance their services" (lol). So I don’t want to give my primary one, neither my pseudo one, nor my junk one as they will be able to correlate my notme@mailbox.org with my name, and then my notme@mailbox.org is no longer anonymous… So I need another one. Maybe banks@mailbox.org (if it exists or something like that). But then come all the other signups of this type (public services accounts, public transports accounts, etc.). Should I have one for each type? How to best segregate them?

So what’s your strategy or the one you think would work best to protect your privacy using email aliases?

I’m curious.