MAC Based VLANs - New User

New to Mikrotik, and I am looking forward to taking advantages of the features I didn't have in a Linksys consumer mesh. However, I'm at a loss because of all of the features.

At the moment I have this setup:

ISP -> RB5009 --> ethr1

ether2 -> Velop mesh (currently has most home devices on it like phones, TVs, security cameras, other IOT devices, Wife's personal and work laptops)

ether3 -> Personal Computer

ether4 -> Server

ether5 -> Work computer

Ideally, I'd like to setup separate VLANs to limit access and visibility across VLANs (Admin, Private, IOT, Guest). What I've gathered by reading through other posts on Reddit and working through the documentation is that this may be possible with MAC-based VLAN assignment but I cannot seem to get it working.

Also, I have plans to wire my home and add a switch into the mix later this year which I assume will make this easier. I even have an old wifi router I'm toying with adding for IOT devices.

So, two questions:

1. Is MAC based VLAN possible in this setup, and if so, does anyone know of a good guide for someone new to Mikrotik?
2. Should I leave my setup as-is, maybe add in the IOT wifi router, and wait until things are wired to properly set up VLANs at that point?