Unable to log into microsoft / outlook using password and code

I am unable to log into my microsoft account / outlook on my phone. I can only log in off my laptop using my laptop pin code, whenever i try and use my password and a code is sent to another e-mail adresss i put the code in and it says something went wrong - please try again, i have been trying now for 4 days, is it because my phone is old? iphone IOS 15.8.8. it seems i can only log in with the laptop pin code, I cannot log in using my passwords and when a code is sent to either phone or laptop, even though ive done the account recover and changed the passwords.