Network/sim card issue Samsung Galaxy S22

Hi there I have a samsung galaxy s22 everything works perfect except for the Sim card aspect of it. Esim and physical Sim card won't work. It doesnt read on the network. Camera works, screen is slightly scratched but no cracks in it. Its not blacklisted or anything the phone is fully paid off and I've been the only owner of the phone in the pictures you can see the IMEI and can even do a look up for proof its not blacklisted listed. Im pretty sure the internal antenna ribbon cables or the sub-board connector is the issue as it can flex easily and snap over time and can be fixed. Due to the issue with that im selling for $100 It will sometimes connect to the networks but then will stop working as well. Pick up is NE calgary looking to sell today if possible.