You should read the entire thread ceiling before you post, everything you mentioned in your reply was already discussed.Check if your engine is getting spark and gas.
- Could be gas filter is clogged as mentioned previously ( cheap to fix )
- If it is a gas pump it will be a bit expensive for the time to take the gas tank down and replace the pump + parts.
- The problem cold be in the distributor, cap, rotor, coil or igniter. ( moderate repair cost )
- The problem could also be in the worn distributor assembly ( few hundred dollars )
If you have no mechanical experience, then take it to a mechanic you trust.