Talk to General Practitioner on Dental Problem

I have a cavity in one of my right side of biting teeth, and it hurts a lot, can't eat from that side... But unable to eat from the left side as well cz I have had RTC of the biting molures, one problem is camping which feels too big for that teeth and no flass space even and it presses the neighboring tetth, while it's neibouring RTCd tooth had no capping just a hard filling, I postponed the capping and it hurts a lot now, as I can't go to dentist... I have 2 questions, are thee any dental clinics working where I could go and get a check no then what to FO NOT ASK TO BOOK AN ONLINE APPOINTMENT... cz it does not work for teeth I need to physically go to get a check up....