Help issues with camera, videos, sound, alarm

[huawei apps problems]

Hello, I have some problem with my huawei mobile. In last time my applications started to crash ( messanger, camera, etc ... ) My camera doesn't work at all. When i start camera app it says: "Unfortunately Gallery has stopped". I saw a lot of content especially on camera crashes on internet but no help.. I cleared cache, cleared data, restarted my phone and still getting same issue. When I install other app for camera it works, but default one that comes with android doesn't.. Camera is not only problem, after some time of using messenger it also crash.. Sound is not working at all, when I set alarm it only vibrate, even do i set to play music.. Youtube videos can't be played. Only black picture and nothing happening ..

I also tried to factory reset phone but after that i keept having same problems..

Thanks