Touch screen problem

[Funcionamento]

My cell phone does not work the touch, and it's crashing. Never fell, sad in this device.

Meu celular não funciona o touch, e está travando. Nunca caiu, triste cm esse aparelho. 

[Uliwooly]

@Funcionamento 

I've edited your post as this is an English only forum, you can use Google Translate to reply and/or post.

Could you test your device? make sure to clean the screen and remove any protective glass, film and/or case

Settings > About phone > Diagnostics > Test

Oreo

Settings > Support > Tests