Zend certified PHP/Magento developer

Ubuntu – Can’t install deb package

everyone.
I want to install a deb package.
I get:
enter image description here

After that, I tried:
https://askubuntu.com/a/40050

It helped to deal with some dependencies, but not all.
Then, I’ve tried:
https://askubuntu.com/a/40037

But I get:
enter image description here

And now I can’t even delete package, as I tried this: https://askubuntu.com/a/1001828

Solution, which I see is: delete package to install gdebi-core, to get missing dependencies, to be able to install this package again, but fully as now it isn’t working.
Or is there something, that I am missing?
Thank you