It already gave you the path it is looking for
Create /data/db dir and you should be good to start your mongod on port 52885
There is a difference between two below commands
mongod --port 52885------------->this looks for default dir /data/db
mongod --port 52885 --dbpath xyz----->This uses whatever path you specify for xyz
Also do not use same path given in your config file when starting mongod on a different port
So the standard config file is used by your brew services start which brings up mongod on default port 27017
If you use same dbpath /opt/homebrew/var/mongodb for both manual and service you may overwrite files or it may throw error
Never use same dbpath for different mongods on the same machine