Thanks for the  tip

on lock screen pass your finger from the bottom of the screen upside

a slide window will appear with options you can choose from next button

Please see the link

https://www.youtube.com/watch?v=woYUE_8Mccw

Very useful answer Beth, thank you. Would never have found it otherwise. 

Hi. I cannot understand Beth and Bruno. Press unlock button and swipe up?

Is your screen locked or unlocked when you do this?

I pressed the phones lock button and swipe upwards but I can't find this 
( covers ) to click on it ??? 

I found this on another forum and it worked! Just press the unlock button , slide up and then press'play'. That's it!

You can change it, press the phones lock button and swipe upwards then click 'covers' and then add. you can have up to 500, i'd recommend cropping the photos youre using to the 9:16 pre-set crop when editing photos

I heard It is possible to set changing wallpapers on the lockscreen. As I've allready seen that there are amezing photos i like to set those as lockscreen.
But i can't find the setting anywhere.
I can find the setting for changing the screenlock, where i can make notifications visable and choose a password.
Also in those settings is a screen lock style, which i have on defualt(magazine).
But as said i can't find the option to set different wallpapers that change every unlock.