Virus keeps downloading on my phone

Some random applications are installed on my phone automatically. These applications are not displayed on the home page, but they are displayed in the configuration / applications. There is a folder in my internal storage called "Ibingo" and all these applications are inside this folder. These applications also have permissions on my microphone, camera and storage.

I tried
– Format my phone

My phone – Colors p50 +, nougat version.
Please, give me some help.