We need to look at history ok...... 1856 Russia lost the war and the Crimea was to be a independent state.
Russia, as a member of the Holy Alliance, had operated as the “police of Europe”, maintaining the balance of power that had been established in the Treaty of Vienna in 1815. Russia had assisted Austria’s efforts in suppressing the Hungarian Revolution of 1848, and expected gratitude. It wanted a free hand in settling its problems with the Ottoman Empire the “sick man of Europe”. Britain could not tolerate Russian dominance of Ottoman affairs as that would challenge the British role in the eastern Mediterranean. water ports of the Black Sea. Warm water ports that did not freeze over in the winter were essential for the development of Russian year-round trade and development of a strong navy. This brought the emerging Russian state into conflict with the Ukrainian Cossacks and then with the Ukrainian Tatars. When Russia conquered these groups and gained possession of Ukraine, the Ottoman Empire lost its buffer zone against Russian expansion, and Russia and the Ottoman Empire fell into direct conflict. The conflict with the Ottoman Empire also presented a religious issue of importance, as Russia saw itself as the protector of Orthodox Christians, many of whom lived under Ottoman control.
When this conflict end the Crimean was not to be annexed to any country.