How do I fix mail freezing on iPhone after the latest update?

Since the last update, my iPhone freezes and I can’t see my mail, the only way I have found to unfreeze it is to turn it off and on again. This only lasts a short time and then I’m turning off again. So annoying and frustrating

[Re-Titled by Moderator]

Original Title: the mail keeps freezing on my iphone since the last update last week, the only way to ckear it is to tutn it off and on again tgat lasts a few hours. so so so grustrating and even consodering miving from Iphones because of this