He did his thing for 2 rounds, then he gassed, his single legs didn't work and he looked like shit. He had no plan B.
Al was solely concerned with the takedown, he felt Khabib's jab and it was nothing so he chose to eat it in order to keep Khabib standing and in hope of a good counter. He never got a good enough counter to start putting Khabib away so Khabib won fair and square. But against a guy outside the top 10 who was preparing for a 3 rounder, he looked underwhelming.
Everybody with a clue watching that fight saw his poor striking tendencies. Wild. No technique. Walking backwards with chin up. Conor would put him away. Max would put him away. Even Nate would put him away. There is a reason they kept switching opponents, they badly want him to be champ for money reasons and they were desperately trying to find someone he could beat.
Max was pulled for absolutely no reason. Think about that. UFC gave him the call because they expected he would struggle on such short notice, they expected him to miss weight and to be drained in the fight. Then they saw how in shape he looked, how easy his cut was going. They panicked and bribed the commission to pull him for NO REASON. No doctors, no hydration test, nothing. Just pulled him because they knew he would destroy Khabib.