Car dies if I’m not giving it gas...

Buy a cigarette lighter voltmeter to monitor as you drive, either a $15 digital one (Amazon) or the $6 Harbor Freight LED cheapie. You do have a dash ammeter, but since you don't mention it, a PO might have disabled it (common "fix"). Sounds more like a "high O/F" issue, either a vacuum leak (too much O) or plugged carburetor idle circuit (too little F). But, "low O/F" can also cause stalling, which is common from "carb float sinks" or "crud blocks inlet valve from seating" issues.

A good start would be to tell us what engine and carburetor you have (why don't they?) and a few under-hood photos to know what condition we are talking about (modifications, frayed wires, rodent nests, ...). If you spray starter fluid into the air filter and that smooths the idle, you know it is an O/F problem.