Since a while, as a Germany, I’m learning Bulgarian with LingQ.
Sometimes it’s hard to find the proper translations and I’d like to have more options to look up the words.
Therefore I’d like to ask for adding some more dictionaries. I would suggest the following:
Pons (German)
This dictionary is already available in other languages on LingQ.
Example URL: букет - Bulgarisch-Deutsch Übersetzung | PONS
Deepl (German)
I found deepl for bulgarian → englisch, would be cool if it would work for german as well.
Wiktionary (English)
In the Russian course, Wiktionary is available on LingQ already. For Bulgarian I’d recommend to use the englisch version of wiktionary because there is not a lot of data in the german version.
Here is an example link if that helps: букет - Wiktionary, the free dictionary
rechnik chitanka (Bulgarian)
Last but not least the hardcore version of Bulgarian dictionary 
This is the most comprehensive dictionary for Bulgarian language that I’m aware of. Since it’s only available in Bulgarian it’s a bit difficult to use but still useful if you can’t find a word in any of the other dictionaries listed above. And you can also translate the site using Google Translate.