Why is the door being held shut? Try this:
1 Door open: relative warm air from room enters
2 Close door: fridge sealed.
3 Air inside starts to cool.
4 Cool air contracts
5 Pressure inside fridge reduces
6 Outside pressure holds door firmly shut.
7 After a while, enough air leaks in to raise the internal pressure sufficiently to allow the door to be opened.
Why is that happening?
There needs to be a way air can leak into the fridge a bit quicker
What holes are there?
What sometimes appears inside the fridge that you would need got rid of?
Condensation.
Check the manual for where the condensation drain is and make sure that is clear of ice and congealed goo. (Search online for the manual if you need to).
I find a bit if old fashioned plastic covered spring wire for net curtains works really well for clearing condensate drains.
YouTube and G##gle in general are useful if you need more advice
Did that help? Please post a reply., June 2020