Starter, Possible Fly Wheel Issue?

At the end of summer 2022, I was having issues with my car not turning on. I would put it in the 'on' position to charge it, and then crank after 10-15 seconds, and nothing would happen. I took it in to my mechanic and they said I needed a new starter. I paid and went on my way. 3-4 months later, the same issue was happening where the car wouldn't crank, and I took it back in. They replaced the starter again, and then a few weeks later, the car was still having the same issue. It also began sometimes making a strange screeching sound when I tried to crank. I took the car back in, left it with the mechanics for over a week and half, but they couldn't get the car to make the same sound. At this point, it was cranking for them.
I took the car back, then traveling to see my parents 3 hours away, when the cranking and screeching began happening more frequently. At this point, it sometimes takes 4-5 times to crank the car for it to finally turn over. The screeching goes in and out based on each crank.

I got a second opinion, and they said it might be the flywheel wearing down, and something with the starter not fitting into the flywheel properly, so it's not spinning as it should. They'd have to take out the transmission to access, and since this is well over a $1k job, they wouldn't advise until the car actually breaks down. I love this car but am in quite a pickle not knowing what to do about it all.