I have sometime the same probleme. I reed it could be a probleme with the computer (AMD processor).The method works with my hold laptot (intel 2 core, 32 bits, but only with Lubuntu and a the pre-command "sudo")
If you follow scrupulously this post, it works :https://forums.ubports.com/topic/10716/installing-on-the-asus-zenfone-max-pro-m1-part-2Use exclusively a computer with ubuntu (or xubunut, lubuntu...).
I'm serching a answer here : https://forums.ubports.com/topic/10965/unlock-bootload-asus-zenfone-max-pro-m1/4?_=1746464532605but it doesn't work for the moment....
I have the same problem.Did you try to tape *#*#checkin#*#* in the phone app ? Normally it permit the oem unlock, but it doesn't work for me.I'm searching a solution too...