Complete child in this shit, help?

Js made acc to post ts but i have iphone and want free games yk, i had to use iphone cuz the fucking viruses broke my android so if u feeling generous js give me a normal fucking guide in comprehensionable words so that i can idk set up my 20 year old laptop and install ipa or wtv its called, how often these are virused idk but i js hope i can play shit soon enough on ios, tysm in advance