Options for home internet are sometimes *very* geographically limited. In my neighborhood for example, the options are cable internet from the local TV company, or dsl from the local phone company, and cable is the only option for a fast enough connection to be able to do two simultaneous zoom calls. Other areas have the option of fiber internet or cable internet, both of which are fast enough for what you're looking to do.
If your only fast option is Xfinity home internet service (cable internet), you can add a cell phone service to the plan for a good price, and get a new phone with them too.
You'll want to buy your own equipment too: cable modem and wifi router in the case of Xfinity. This saves you on monthly equipment rental costs. The payback is something like 2 years, and you can get better equipment than Xfinity rents out. When you call around, ask for "home internet service" not wifi, because the service to your house is what you want, and your wifi router will provide the wifi. You don't want to be quoted prices with their equipment rental included.