frig freezing most stuff

[Rose Mary]

Hi group
getting tired of tossing and wasting food. The frig is freezing most
everything. Have it turned almost to off and it hasn't made any
difference.
It is the original dometic, where is the thermostat? is it something I
can replace?

Also wondering if the rubber around the door is too old and letting
warm air inside? It has no tears but with the age wondering if that
could contribute to the problem? Is that something I could replace?

Thanks
Rose Mary
82 FC 35
JP's White Bird
near Sacramento for another week