My loud key stops working?

I have a Huawei p smart 2018. For 2 days the volume button for louder has not worked, but it still works quietly. The other thing is. When I reboot the cell phone I have to press on / off bottom and volume + button and it works so it can't be a hardware error. I have already tried reboot and facility reset but it didn't work

Can help me

Ask:

Have you installed a new app lately?

Have you looked for Android updates yet?

I have the latest tiktok and Android and emui are up to date

Possibly. Can that help you: https://www.guidingtech.com/fix-android-volume-buttons/

Tried it still doesn't work