Apps like music, gallery, file manager, pdf reader need to be downloaded in infinix note 5?

[Android Central Question]

Apps like music, gallery, file manager, pdf reader need to be downloaded in infinix note 5?

Is there a need to download these apps or these are already available in infinix note 5 as sysytem apps ?

If these apps are already available as sysytem apps, then where are these, how can I search them, bacause I am not able to find anymore ?
With the lack of system apps I am not enjoying infinix note 5 at all.

But if there is a need to download such common apps from play store, then how can I decide that which app is official or editors's choice ?
Which app is perfect to download as it is not possible to download a single app so many times and then compare which is best.

So please tell me a final solution to sort out of this problem.

 

[ManiacJoe]

None of those apps will be system apps, meaning apps being part of the android operating system.
On many phones those user apps will be pre-installed by the phone maker or the carrier.
If you have them, their icons will be in your app drawer, and the apps will be listed in the phone
Settings > general > apps

I cannot claim any of these apps are "best", but they are the ones I like:
gallery -- "piktures" by Diune
file browser -- "x-plore" by Lonely Cat Games
pdf -- Adobe Acrobat
music -- whatever basic app was pre-installed on my phone