Xiaomi India — about storage

Bought redmi 5A . In starting it was working well it has 16gb storage.extra I downloaded more than 3 apps and captured lot's of photos without any problem but now I deleted all the photos and uninstalled all the extra apps and defaulted apps too still it ain't working properly all the time it asks to clean stuffs sometimes camera doesn't work because clean message pops up .can you bring me back those pictures else fix my problem