Are you kidding? NATO readiness is at an all time low. Germany only has 244 tanks, many of which are inoperable with no spares to fix them, it has 212 fighters, bombers and attack aircraft, again poorly maintained. It has a total of 215,000 military personnel counting every swinging Richard, cooks, clerks doctors, everyone. France has 406 tanks, 269 fighters, bombers and attack aircraft and 300,000 military personnel. The UK has 209 tanks, 134 fighters, bombers and attack aircraft and 280,000 military personnel. Those the Heavy hitters of NATO. NATO has drawn down from being the well equipped and well trained force of the Cold War. The NATO countries can’t defend themselves, let alone the Ukraine. Russia has serious problems, but it’s far stronger than the European NATO members and is right on the Ukraine’s border. NATO has to move troops and vehicles hundreds of miles to get to the Ukraine.
Also, Russia and its society can stomach casualities, European societies can't.
None of those countries can put anything on the ground to stop Russia, the people would chase those governments out of office and it would throw those countries into serious internal troubles.