Tell us about the decisions of the Paris Congress. What were the losses of Russia?

At that time, Russia was forced to admit defeat. The Paris Treaty was signed. The terms of the contract, which concerned the Russian side, were as follows:

The Black Sea was recognized as neutral, and therefore, it was impossible to have large military bases and a fleet here;
Russia has lost its protectorate over Moldova and Malachia;
Lost part of the lands of Bessarabia;
She returned the city of Kars to the Ottoman Empire in exchange for her other cities;
Freedom of navigation was established in the Danube.