Based on OP's post and comments, they probably don't know how to put a proper compression fitting on. This matters because those shitty crimp on fittings that people buy should NEVER be used on cables connected to an ISP.

The frequencies running on coax are the same ones used by air traffic to communicate (as well as tons of other frequencies). Crimp on fittings do not keep all the RF inside the cable and can introduce noise into the system. Not only that, but they let those frequencies out into the air.

While the RF radiating out of the cable line isn't harmful to humans, it can be picked up by all sorts of things that shouldn't be able to hear it. Then cable companies have to drive around with an RF sniffer to find these leaks.

So maybe OP can just throw a fitting on and connect it, but as someone with a basic grasp of these systems, I would highly recommend leaving it be.

Edit: but, the forgotten word