When I had my Skywatcher 8" dob I never had to collimate it. Even when I took mirror out to wash it I just marked the cell and put it back and after checking collimation was spot on. Bigger Dobs like my Bintel 12" tend to go out of collimation more often, but if you invest into stronger springs then miner corrections are needed only if you drive over rough roads
Check if the laser collimator is collimated itself first by putting it in two V shaped peaces of wood. You can find instructions here on this forum. Put it about 5 meters away from the wall or something, ask someone to turn it around and see if the dot makes circles or stays still. It should stay still, if not your laser collimator needs to be adjusted/collimated.
My laser collimator from Andrews was totally out when I received it, and it took me a while to adjust it before it could be used.
Try Barlowed laser collimation, you can really fine tune this way.
bob