@yaserkhan06 Hi and welcome. Go to your profile picture top right of screen and click on this. Then click on edit profile, You then will see were you can change your email address and remember to click save
I tried the same way before also but once I choose the option to change the email id and enter the same it will ask for password then once I enter the password also it's not working.. I will share the screen shot please check
Please send me a private message about this with both your old and new email. Attach also the URL of this thread in yoiu message so I know what it's regarding.