Hi, first thank you for moving the thread and 2nd for your suggestionIn your part of Europe, I would look for good firearms from CZ, Israel or Turkey. Some of the newer offerings appearing in the US from Turkey are pretty impressive for the price. Some of this advantage may be due to exchange rate.
Used S&W firearms may be available in your area too. Revolvers from S&W are well made, and often available at reasonable prices.
Avoid buying cheaply made Cheap handguns for sale. Buy an older gun if you can find one that has not been abused or worn out, and you can get adequate support from a dealer.