Porcelain cap is necessary
I’ve seen this temporary filling stuff at the drugstore, comes in a tiny can like container.
There are no self help remedies for a broken tooth. Sorry, but the only thing you can do is visit a dentist. If you can’t afford the fee, talk to your dentist. Some will make a payment plan out for you.
You need to see a dentist. There is no way to repair a broken tooth. It can get infected and there can be complications beyond that of just your mouth. If you’re unable to pay for medical care, see your dentist I’m sure they will be able to work out a payment plan with you to get the job done. see your doctor ASAP.