not quite, the specific events from alien 3 and resurrections are that ripley gets to the prison planet, and there she dies while impregnated with the alien queen egg, then she gets cloned and all, but if not, some event would still happen, watever happens in alien 5, she wouldnt have the queen but she obviously will fight against the xenomorphs, at some point in the future still whatever happens, the characters, call, maybe weylan-yutani being bought, and militars wanting to control the xenomorphs could still happen as those events are not caused by ripley's death on alien 3, the prisoners wouldnt ever die because of the alien, and they would continue their PEACEFUL lives without ever knowing anything about aliens and ripley, ripley would be cloned instead we would see them searching any other way to get alien dna(from whatever source) call would still try to destroy them, and the crew would still abduct people for the militars to impregnate them with aliens, what would happen next, who knows, given that there wouldnt be a ripley clone and all, BUT the characters, and some of the events would still happen