Reasons for Russia’s defeat in the Crimean War of 1853-1856

The following main reasons for Russia’s defeat in the Crimean War can be identified:
Inexperience of the command of the Russian army;
Weak level of weapons (the weapons of the Russian army were very outdated);
The best armies in the world fought against the Russian Empire;
Superiority in ships was on the side of the enemy.
This entailed the fact that Russia was forced to make concessions and temporarily renounce its claims to the Balkans and control of the sea.