New to adulting. Just moved out and need advice

My boyfriend (25m) and I (23F) tried buying a Foam mattress at Ikea but didn't realize until it was too late that it's not exactly what we were looking for. It was less than 5 inches thick and we definitely need something more thicker like a standard mattress. I understand that springs tend to wear down faster than foam but I've also heard horror stories about fiberglass from those and could really use the advice. Any good Hybrids out there or would you recommend staying away from those? I'm in desperate need... we already bought a queen bedframe but need a mattress...