It acts like it wants to start but it wont. The oxygen sensor fell off i replaced that.It also smells like gas is leaking. I dont know if the fuel injectors are leaking. Im not a mechanic I dont know what to do
If you smell gas you would not really want it to start. You might live a lot longer as a fire concerning a fuel line could be like a long fuse on many sticks of dynamite. Also a fuel leak will cause a loss of fuel pressure and a no start situation.
Your post, "Im not a mechanic I dont know what to do", directs me to advise;
Live longer, get it towed to a shop.