Supabase is an open source Firebase alternative. Start your project with a Postgres database, Authentication, instant APIs, Edge Functions, Realtime subscriptions, and Storage.

Supabase

any recommendations for a place to learn how to best model the data

This depends on what you are creating, it's generally specific to a project. You can also do a google search on database schema modelling and normalisation of data.

Also please don't spam multiple channels with the same message.

Oh sure, apologies, didn't know where to ask really, Thank you