Take the smallest pilot hole drillbit you have (1/16" or 1mm) and drill 5-8 holes in the bottom of your trash can. This not only allows the air to escape as the bag fills up, but also makes it easier to remove the trash bag later.
I’ve done this with two trash cans now and recommend it to everyone.
Definitely feel like when you end up with a bag you can’t pull out there’s a good chance it’s jammed full enough of stuff that something in there is leaking…