With my wife and i working from home, and my kid doing school (then home MTC) it gives me more control. For example, my wife is on zoom meetings all day long (like my kid when he was doing Home MTC)... I could make sure their 'traffic' got priority over any large file downloads i needed to do for work.
It also lets you monitor bandwidth and data usage easier...
.. and its super nerdy and fun to setup.
All you need is an old PC with 2 network jacks to set up to and try it. (or you can buy/build the hardware for ~$100).
Or... you can just use whatever WiFi router you have/buy, they all have firewall/routing built in.