New gas cans are great for storage, not so great for dispensing. The easiest way I have found is to use a safety siphon. It's just a check valve and a clear hose. You put the valve in the gas and jiggle it to fill the hose, then it siphons. They come with a vinyl hose that gets stiff when it is cold. I replaced mine with a tygon hose which works much better.

Gas cans manufactured post ~2020 have an internal flame arrester baffle that interferes with doing this, but it's pretty easy to remove. Just don't do that on the can that you use to start bon fires ; )