No surprises here. Just like the lockdown on iPhone screen and part replacements, Macbooks suffer from the same Apple’s anti-repair and anti-consumer bullshit. Battery glued, ssd soldered in and can’t even swap parts with other official parts. 6000$ laptop and you don’t even own it.
I just recently had a 2020 gen MacBook pro die on me. When I took it to the genius bar, they said that it was a power issue that they couldn’t repair unless they changed the whole logic board which would cost me $500 and without the ability to recover the data on the soldered SSD. What’s worse is that they sent me to a 3rd party data recovery company to recover my data for $1200. I ended up declining the data recovery and just accepted that my data is gone and bought a thinkpad to replace the laptop.
You may want to check out these two videos from Louis Rossman. He talks about your exact problem with the soldered SSD and directing you to drive savers.
https://youtu.be/OVZTBhVV5tI
https://youtu.be/0qbrLiGY4Cg