@Brent276 You should have, at minimum, the capability to set up a secured, encrypted Guest Network. It should have its own login and password, and when you look at what networks are available, you should see it as a separate network from your main network, with the "lock" icon.
It keeps any devices that log into it separate from your main network (and each other, if more than one).
The types of guest networks that open a web page asking for the password, and show up as "open" on the available networks list, are less secure.
It is theoretically possible for a hacker to gain access to a main network from a guest network, but a person would need to be pretty determined to do that.
The most secure situation is, of course, two separate routers.
