I would definitely wait for the s24 lineup to come out. They’re expected to be showcased January 17th so it’s not that far away. In the meantime, go to your carrier store or Best buy and play around with the Samsung phones just so you can get a feel and see up close the Android OS. You can also order a used s23 or s22 from Amazon and use it until the new s24 lineup comes out then return it. I ordered a cheap iPhone se 3rd Gen and used it for about a month before returning it. I wanted to see if Apple’s os was right for me before making the switch to the iPhone 15 pro max. I didn’t like the os, so I went with the pixel 8 pro since I already really liked the pixel’s OS.
If it’s an iPhone from the 15 lineup you can sell it for almost close to what it cost. Plus they’re still in high demand, especially the pro models. Use the money to pay in full an Android.