I only plan to use it for messaging in a couple of sports teams and event invitations.
I’m willing to take a lot of measures as long as they don’t get the account blocked - no phone app, dedicated virtual machine+VPN to isolate from other internet activity, purchased fake phone number in signup, adding fake interests and life details. However, I won’t provide any real ID/photos, are these needed for signup?
Use Signal instead.
Or Graphene OS, second profile, VPN etc. But accept all chats, contacts, meta data or monitored. Sign up process using anon data is getting harder and harder, especially with phone number controls. The hard part isn’t going to be running it, in a secure enclave, but signing up with anon data.