CRM recommendation

Kia ora!

I’m on the hunt for a solution for my workplace – we run a membership non-profit that runs regular social groups. I’m looking for a CRM – or other option – that will allow us to collect membership information, allow our members to update their own details when they feel they need to, and collect information from sign-in forms at our events that will tie that information to member records/profiles.

I’ve found it tricky to find a solution out there that will let people update their own information, in particular! Any recommendations are greatly appreciated!