What you described can be caused by a couple of different things. First, when it won't start, see if it will using starting fluid. If it does and then stalls, we will know it if fuel related. If there is no change, then it is likely ignition related. In that case, I need you to check for spark to the plugs. Here is a link that shows how it's done:
If there is no spark, my first suspect is the crank angle sensor in the distributor. See pic below for location.
Let me know if you are comfortable doing this and the results.
See pic below.
Thursday, April 7th, 2022 AT 6:07 PM