Sorry for being busy these days and replying so late, I followed the advice you gave in the email, and one of the built-in speakers resumed working. At the same time, I found that the built-in speakers on the other side near the charging port didn't work, I tried to flash the stock ROM and it still didn't change, and I wasn't sure if it was a hardware glitch that I hadn't noticed because I used Bluetooth headphones almost exclusively.
Thank you very much for taking the time to try to help us solve the problem.
Attach the logcat file captured at startup:
logcat.txt