Car runs ok when cold, drive 5 miles to store, 30 minutes later, car starts but stalls idles about 200 rpms,

Hello, an engine requires multiple elements to run properly. Fuel delivery in the proper amount, air intake in the proper amount, ignition spark in the proper amount, and exhaust flow. Something clearly isn't working out with one or more of those elements. Testing is needed to figure out what is lacking (or is overabundant), and then once you find out what, then you can troubleshoot down to what is causing this problem and repair it. All the guesses so far haven't resolved it, so I would say it's time to really dig into the concern and professionally troubleshoot it. Here are some shops near you that you could contact: https://repairpal.com/repair-shops/suzuki-repair-and-service-in-mansfield-ohio