Productivity, aesthetics, good performance, not expensive, Samsung.

I'm looking to buy a phone (under 280$). Original plan was to buy a used z flip 7 or 6 from this website I've used in the past (usedpanda); the problem is, they don't have any, and now im lost!

I want a Samsung since I'm already integrated into the ecosystem (earbuds, headphones, tablet, notes, etc.), and it's great imo. I have the A14, and it's too slow in my opinion, and maybe I'm just bad at keeping my phone's storage in line, but I don't have the same problem with my tablet (s8). Help?