Manual translation and forwarding

Hi there!

I have a single language website (Turkish) and I want to translate my content into English as a sub directory. I know there are solutions like Weglot but on some pages I will have different content in Turkish and English versions. So I believe I need to use manual copy-paste pages and manual translations. The problem is I could not redirect users to the translations of the same page. Something like this:
User is in /contact page and selects English from language switcher the website should switch to right page in “en” version: /en/contact etc. I couldn’t find a way to manage this. Any of you have a solution for this, it will be really appreciated.