“I mean of course you cant force people to become frum”
Yes you can force people to become frum. Indeed, we’re obligated to force people to become frum.
Perhaps what you meant to write is that since the Goyim and the Frei control the governments and make the laws they use those tools to stop us from forcing people to become frum, as we’re required to do. But, certainly, under proper circumstances we can and should force people to become frum.