Weird. Maybe you can help explain it to me
Easy, because you didn't actually really look at any history books.
Even Wiki states:
Crimea Operation (1918)
The Taurida Soviet Socialist Republic was quickly overrun by German and Ukrainian forces under command of Petro Bolbochan during the Crimean Offensive. The relative quick pace of the operation was due to desertion and widespread demoralization amongst the forces of Taurida, in addition to simultaneous peasant revolts across Crimea. By the end of April 1918, the majority of the members of the Central Executive Committee and the Council of People's Commissars, including council leader Anton Slutsky and local Bolshevik chief Jan Tarwacki, were arrested and shot in Alushta by insurgent Crimean Tatars, partially in reaction to the prior killing of Tatar independence leader Noman Çelebicihan by the Bolsheviks earlier in February. On 30 April, the Taurida SSR was abolished and former Chief of Staff Mikhail Sablin raised the colours of the Ukrainian People's Republic on 29 April 1918
https://en.wikipedia.org/wiki/Crimea_Operation_(1918)
LOL. Fail. Wikipedia does not count as history. Its the 1984 ministry of truth, where history will be whatever the party demands it say today.