If it is similar to the current Satisfy Kardan then it should not be loose at all.
Even a proper uni pivot should not move in that direction unless you pick it up off the pivot. Easy movement in that direction is very bad and indicates a bad bearing which is never good. The best tonearms move in only two directions, up and down, and side to side. Nothing else.
I would get a new arm but that is up to you. My worry would be record wear from bad bearings. I am also not an expert in that arm.
Even a proper uni pivot should not move in that direction unless you pick it up off the pivot. Easy movement in that direction is very bad and indicates a bad bearing which is never good. The best tonearms move in only two directions, up and down, and side to side. Nothing else.
I would get a new arm but that is up to you. My worry would be record wear from bad bearings. I am also not an expert in that arm.