Need some help with diagnosing my car. Young guy learning

I get the same symptoms with corroded battery connectors on my Duster, every year or so I have to clean and reinstall the connectors and lugs on the battery. I think it has something to do with the high altitude and dry air, IDK.

Get one of those battery terminal brushes if you don't already have one and give the terminals and cable connectors a good scrubbing.