Bro make it finish its charge and try recovery mode to reset it

Okay to unlock it u must have a samsung account n that account should be connected to ur phone next all u have to do is connect ur phone with the internet then by another phone go on Google n search find my phone Samsung the link yemetalehal then enter that website then enter ur Samsung account then press the unlock button then it will unlock ur phone....but if u don't have a Samsung account connected to ur phone the basically ur doomed man

Yetesereke gestek nw ende may be

Samsung Customer Service email tsaflachew or be websitachew anagrachew, ykeftulhal