Why did Foreman fight like an inept fool against Muhammad Ali?

I still think Ali would have won as he was an around better fighter who could take punch better than anyone. But I feel Foreman made it easy for Ali as he fought such a foolish fight in 100 degree heat against someone who was as tough as they come, which Foreman and his corner ie Saddler, Archie Moore and Sandy Saddler (fought Willie Pep in extraordinary battles) should known in the first place. I am not being a crusader as I am a big Foreman fan but he should have known he was unlikely to conquer Ali by a knockout as Ali was far too durable and had amazing punch resistance and normally showed that in all of his fights. Okay he lost on points to Frazier and Norton but George should still have known that doesn't necessarliy guarantee him a knockout over someone who had not been knocked out in 44 fights at the time and had also beat big punchers in Sonny Liston and Cleveland Williams even though Foreman annihilated both Frazier and Norton. So in my opinion Foreman and his corner contributed to his loss in Zaire as they went into the fight without any battleplan whatsoever, instead just looked for the big punch that was going to knock Ali out, which wasn't going to happen as Ali was far too tough and smart over longer fights whereas George got frustrated and disorietated after 4 or 5 rounds. Especially against Ali as Ali had lost to Frazier and Norton who George destroyed. But if Foreman was smart during that fight he would have paced himself better and tried to win the bout on points although that might have gave Ali the chace to pick Foreman off and win a landslide points decision. So to be fair to Foreman, he might have did the right thing by pressuring Ali although he could have did it with a bit more thought ie used the jab more as he neglected the jab he used against Frazier and Norton when he fought Ali. So it was a catch - 22 scenario for For as he would have been picked off by Ali if he boxed more conservatively and wore out - just like what happened - by putting pressure on Ali lol. That is what makes Ali such an awkward fighter to be up against and and fantastc fighter to watch. I also think Ali could have beaten Foreman by trading with him as Ali could take a punch better than anyone but just chose to block and tie up Foreman when Foreman got close as George had a habit of pushing opponents. But if you watch this fight Ali looked so much stronger than Foreman in the clinches and when pushing Foreman off just like he did against other quality opposition in Sonny Liston.