Change The Domain Of The Website To Another One

Hello,

I am planning to change the domain of my website
The difference between the new and the old domains is too big but the name of the website will be the same

I want you to help in set the old domain to transfer to the new domain (the direction)

for example I have these pages in the old domain :

I want to setup the old domain to transfer the visitors that come to the old domain example.com
change all of the old directions of the old domain to the new directions of the new domain :

How can I do that without loss the relation of my website (with the old domain) with Google and the other engines

I hope you understand me

and please help me if you have experinces about this process

Best wishes