Hi @matthewlee,
Welcome to the community 
You need a One to Many relationship in the Ratings collection to store the user that reviewed for.
Check here : Star Rating components doesn't work with database - #8 by dilon_perera ( it’s like same but it’s for rate festivals)
Made a video : Loom | Free Screen & Video Recording Software | Loom ( actually have another two videos as part 2 and 3 
: Loom | Free Screen & Video Recording Software | Loom , Loom | Free Screen & Video Recording Software | Loom )
To show reviews of the logged in user in the profile screen you can add the filter as Logged in user > reviews instead of current user!
Also this thread should help here too! : Star rating component help
Hope this helps!
Thank you