@myswtest I wish to install the Linux version of the Opera browser on the Acer Spin 513 too simply because there is a huge difference in appearance between the Linux installed version compared to the Android from the Play Store.
And I mean Huge!
I will keep on trying, Ton.

I have been reading, I do not know much about computers but could it be possible my problem has something to do with ARM64 vs x64? Something about the processor in my newer Chromebook?
It is a Acer Spin 513 and has a sticker on it saying Qualcomm Snapdragon.
And if so, does that mean no Opera browser installation on this one within Linux?
Regards, Ton.

Hi, last week I installed Opera browser in the Linux section on two Chromebooks.
I downloaded the installation .deb link from the Opera website and everything went smoothly.
Now I try to install Opera browser on my own Acer 513 and it wont work.
Using the same .deb installation file I get a message saying the following packages have unmet dependencies.
The list is rather long, they all begin with Depends, followed by lib and something behind, ending with but is not installable.
Does anyone have a suggestion what the problem might be?
Regards, Ton.

@vissertw1948 I found the solution! Just download the picture you have chosen in the Opera browser. After that it will be shown in the settings where to change the background.

@fblauer I have the same problem, when I choose to select a picture already on my computer I cannot find find the download map or the external storage on the Chromebook.
Anyone who can produce a howto on this subject?

@sgunhouse Thank you, you have helped me very much!
I made the Linux installation.
Have a nice day, regards, Ton.