Frigidaire refrigerator not cold enough

My Fridgidaire PHSC39EJSS0 freezer is not going below 32 degrees. Both the condenser fan and the evaporator fan struggle to run as soon as the temp reads 32. The fans run for about 3 seconds before cutting off. However, if I leave the door open so that the temp gets to 40 or 50 degrees, both fans run fine until the freezer gets to 32. The evaporator coils were slightly covered with frost and I allowed it to melt- it didn’t help. I have no idea what could be wrong. Please help.