It’s to be expected for dogs to be reactive to situations or environments that are uncommon to them. This is one of the things we’ve bred them for, but there is a difference between healthy reactions and nervousness.
Socialisation started early on in life, very gently and always in a safe, friendly environment will shape a puppy’s perception of the world in a positive way.
To well-socialised dogs learning new things or exploring new places is fun, to unsocialised dogs it can be a terrifying experience.
If your pooch doesn’t do well in certain situations think about getting them some help so they can recover from the unnecessary associated fearfulness. 🐾💚