Are wrestling moves practical in a real life fight?

When some people said that wrestling is fake, they are usually referring to the old televised wrestling shows. The techniques are not fakes although some of the ones used are extremely exaggerated for dramatic effects. 

Whether a specific technique is practical or effective depends on how it is applied and to what situation. A combat technique is not a one size fits all situations.  Nor are they used the same way for all circumstances. Martial art techniques is not a suit that you wear to all occasions.  

Not only is pro wrestling influenced by modern martial arts and combat sports. But it's also derived from catch wrestling which is a far and wide proven grappling art. That being said most pro wrestling schools focus heavily on theatrics and impressive athletic maneuvers over practical fighting techniques. So most aren't going to "learn" how to fight from that alone. But I've seen pro wrestlers practice things that one would probably see at an MMA school. Like hitting pads or basic grappling fundamentals. That isn't the normal way of training though.

The biggest factor isn't so much the technique themselves, but how one trains and who they train with. One in theory could take at least some of the techniques and utilize them effectively if they train in a non-compliant environment with people that are actually great martial artists. This is likely the reason Kazushi Sakuraba and Ikhuisa Minowa had success in MMA. Both of them are legitimate catch wrestlers and pro wrestlers. 

https://www.youtube.com/watch?v=YBOFmydvlAc

https://www.youtube.com/watch?v=GnisHrvnWJ4&t=36s

For the rare few that actually do a move that isn't based on established martial arts: It's a high risk, high reward that has to be set up. No one is a "fighter" that specializes in pro wrestling. But incorporating the arguably unorthodox techniques is possible provided they're allowed within MMA rules. 

Absolutely.  In fact if nobody intervenes most fights end up on the ground at some point.  If a wrestler can get inside a boxer's range they have a huge advantage.  It's best to know both skills though.  The thing is that pro wrestling is fake and is not real wrestling.  Real wrestling is an effective hand to hand combat skill.