help me to fix aldo as8???

hi everyone

im from indonesia, few month ago my brother buy phone "name aldo as8" this phone make him crazy because always show to many ads on home screen everytime, i try to scan with all antivirus but it's not working, i find to many trojan virus but i can delete it, i try to reset it but all virus still there. :(

please help me all
i dont know what must i do :crying:

thank's