"HI To,;" (he wrote, before switching his keyboard back to Canadian English 😁)
Hi Tom,
"Italian is not a great choice when your keyboard is printed for azerty."
Quite true!
On the topic of using the Option key, which would be the case for an English kb…
The AZERTY layouts have a pair of 'dead keys' (keys which place an accent, but are 'dead' with respect to moving the insertion point to the 'next' space),on the up front kb (no modifier keys down), to left and right of the currency symbol ; in the rightmost three positions on the second row:

Pressing option provides a dead key tilde ~ at the n position; pressing shift an umlaut ¨ to the left of the currency symbol. Common accented letters are typed directly at the locations shown above, and Stuart423's suggestion to press and hold the key for the letter to be accented, wait for the list of accented letters shows up, then tap the key for the number labeling the accent you want applied also works, but you may need to press shift and tap the number key as the numbers are 'upper case' characters on the AZERTY keyboards.
Regards,
Barry