redirect problem because duplicat content

Good morning everybody!

i got a problem that i didnt know to resolve at hte moment.

i got a webseite under https://mydomain.de and i like to redirect from other possible url like :

https://mydomain.de
https://www.mydomain.de
https://www.mydoamin.de

ol those to https://mydomain of course dublicat content. exist there a tool which can realize this. i tried some but nothing works on all kind of URL.

i hope someone got an idea!?

thank you very much

Marcus