@brunosjob
Welcome to the expat.com forum! I'm sorry to hear that you've struggled here, and I hope things will improve for you very soon!
This thread is VERY old, so it's probably not a great discussion to jump in on. I recommend that you read some of the more recent topics and contribute there, or create a new topic of your own (e.g. "Why you shouldn't move to Bulgaria!" if this is something you feel very strongly about).
Your post is a little harshly expressed, I think. But, at the same time, I can see that there is definitely some truth in what you say.
Bulgaria is the poorest country in the EU so, of course, salaries are very low, and there is much lower investment in infrastructure (unless it's EU funding). As you come from Germany, one of the wealthiest EU countries, the contrast will appear rather dramatic. We sold our house in Germany just before moving here, so I've also experienced the move from a spotlessly maintained German town (and German roads) to a much more rustic Bulgaria. It's a bit of a culture shock. :-)
You're also correct that it's a Russian-style country in many ways. It was once a part of the Soviet Union, so you can't be surprised by this! And, to be fair, the Fall of Communism happened only 30 years ago, it's not so long to transform a country and society (and eradicate corruption). Germany itself struggled with the modernization and integration of East Germany, even with Germany's wealth. For poor countries like Romania, Bulgaria, Moldova, and Albania it has been a huge struggle.
A particular aspect of these communist countries was the Soviet-era large-scale construction of prefab concrete or "panel" buildings. These are (mostly) safe and not falling down, but most would agree that they are pretty depressing to look at!
If you're young and working, then it's probably not a great option, as there are better salaries and a higher standard of living to be found elsewhere. If you don't need to work, or you can work remotely, then Bulgaria's low cost of living can be very attractive. If you're an outdoorsy kinda person, then you can perhaps appreciate the beauty of Bulgaria's countryside and National Parks spread across multiple mountain ranges. And with Bulgaria's small population, these are still wide-open spaces for you to enjoy.
In general terms, you're not the first expat to be horrified by their new country, in comparison to their own country. This happens a lot in fact, as most people are, to some degree, proud of where they come from, and very comfortable with how things are done there. And new things are inherently a bit of a shock. I'm a Brit, and the Brits were notorious for moving to Spain, and then complaining that it was terrible because it's too hot, and you can't get a decent cup of tea or a proper English Breakfast. :-) We have some friends here in Plovdiv, and they are just about to leave the country, and return home to Brazil. The husband had a good job and liked Plovdiv, and was happy to make adjustments. But his wife hated it from the first day, and never made any attempt to find the positives about life here. Relocating is very challenging anyway, but doubly so if you don't have a positive attitude and embrace your new country.
I spent years in Latin America (Panama, Argentina, Chile, Brazil) and I can assure that even the worst country in the EU is far safer and far less corrupt! Panama even has a phrase for cheating, the "juego vivo" or "game of life", so you kinda know this is not a culture that values honesty and integrity and plain-dealing. :-) I lost a ton of my money there before I realized that the rules of the game were completely different, and I had to adapt or die (or get the hell outta Dodge). But I can still appreciate many of the great things about these countries, even if I think doing business there is extremely challenging for foreigners. And I certainly wouldn't turn a particularly negative aspect of the country, into a general guidance to avoid the country completely.