I could have died tonight because of my tire

I was about 40 minutes from home and I must have run something over on the freeway because my tire psi dropped from 34 to 25 instantly. I was watching it and i was freaking out. It slowly got lower and lower and i had hit 21 rolling into the parking lot. Needless to say the tire is probably done for and i can expect a flat tomorrow.

I was scared and was praying to every diety i could think of going dear lord please don't let this tire blow because I'm on the freeway and far from home and i don't wanna kill anyone or die all mangled and decapitated.

Thing is im beyond broke. I have zero money for a tire assuming i need one. I couldn't see anything in it but its dark outside and the tire may be resting on whatever it is. I'm doomed