I need to connect a router to Xfinity hotspots during travel (without using Ethernet for setup)

I purchased a TP link Archer Ax50. I'm thinking I might have to return it if I can't figure this out. My job requires a hard wire connection, in order to access their VPN, to then access the programs on my laptop. I am hoping there's a way to connect the router to Xfinity hotspots without using an Ethernet cord; because wherever I end up staying, chances are, won't have an Ethernet connection in the rooms. I've placed many calls and keep getting "no" for an answer when I inquire about it. I chose this AX50 router for it's pricing & features for speed improvement, because I need all I can get, in order to have a good enough quality connection for receiving and placing calls 8+ hours a day. Even when I'm home and hard wired to my Xfi highest speed package (by a 50 ft Ethernet to a separate room), once I'm connected to the job's Vpn, my speed goes from 800 mbps to about 60-75 mbps! Please help! Any suggestions are welcome, even on suggested devices to purchase, that will get me the best speed. Thanks.