Custom strings for a beginner

Quickinfo:
– I’ve made a clean install with the latest wordpress and polylang version.
– Permalinks are custom structure
– Not using a static page
– I have swedish as default language and finnish as secondary.

—–

Hey!

I have very limited php knowledge and I survive mostly on copy/pasting simple php code regarding basic WordPress functionality. In my scenario I want to learn how to make custom strings which I need for the menu(navigation) and later the contact form page.

Here is an image of the current situation:

https://oi62.tinypic.com/11vnqeo.jpg

With the url ending with /sv/ it shows everything as it should. When I change to /fi/ only the post is changing.

How can I make the menu1 string to show the correct language depending on /language/ url?

Here are the necessary .php files:

header.php: https://pastie.org/private/oyebsedmk5hciij8czq
functions.php: https://pastie.org/private/r5goaja7rzgj59op1yvb4w

I’ve found many similar questions regarding this and I’ve tried some answers that have worked for others but not for me.

-t

https://www.ads-software.com/plugins/polylang/