Hello all, I figured this was the best place to come for genuine advice 🤞

I bought a 2008 Aveo the other night. Seller told me the fan belt tensioner needed to be replaced but wasnt a big issue.
Turns out on my way home, the timing belt went.
I was in first gear, taking off and that was it. I dont think it would have done much damage but I don't know much about cars.

Has anyone experienced this?

Can I just put the belt back on or do I need a mechanic to do it? I cant imagine the pins or clogs moved an awful lot but a friend says if I put the belt on wrong it could ruin the engine?

Would I be as well off trying it myself, getting a mechanic to try and fix it or search for a new engine?

I'm on a very tight budget so need to pick the best option and go with it.

Thanks in advance.