Does this also happen in your country ?

In the most routine moments of life, like going to work or university, it seems difficult to meet strangers. You can find someone interesting to meet but I think we're not brave enough to start a conversation just to meet someone. and A simple hello would be enough, but in Spain it is not normal . It is more common to meet a friend or another friend or talk with someone with whom you have obligation for some reason.
For example, talk to someone on the train is strange and you would look crazy.

However, on special occasions such as trips, holidays or any event , people are more open and start conversations with anyone.

[Very good.  You only need a space after each period and comman, not before.]

Does this also happen in your country ?

In the most routine moments of life , like going to work or to university , it seems difficult to meet strangers. You can find someone interesting to meet but I think that we're not very brave enough to start a conversation just to meet someone. and A simple hello would be enough, but in Spain it is not normal . It is more common to meet a friend or another friend or talk with someone with whom you have an obligation for some reason.
For example, to talk to someone on the train is a strange thing to do and you would look crazy.

However , on special occasions such as trips , holidays or any event , people are more open and start conversations with anyone .

Bien escrito! Estoy de acuerdo. En los EEUU a veces siento lo mismo. Pero, la mayoria de las personas aquí disfrutan a hablar con los extranjeros. Entonces, si visitas, no tienes miedo. Hable con alguien!