No guest network on router, what can I do here?

[phnx]

Not free or open source but a good option nonetheless.

The router my ISP provided me sucks. Is it safe to buy a new one and use my current one as a modem?

You should ask your ISP if it’s possible to use your own router without their modem. This would be ideal, but it’s also probably fine to keep their modem if necessary. As for which router/access point you should purchase, it’s really a question of budget and the area you are hoping to cover. Personally, I’ve found Ubiquiti Unifi gear to be rock solid, and they have a lot to choose from depending on your requirements. They constantly release software updates with new features and security patc…