I live in a sunni country, thus the food is halal everywhere.
But there are many indian and chinese people who works in the restaurant:
1) If I can see the kitchen, and I saw that the cooks dont wear gloves.
-And I dont know if its a hindu people or a pakistani
-Or if I see the chinese , I dont know if he is christian or not.

Do I have the right to eat?
Its still halal but its preferable to dont eat there right?

2) The second situation, is sometimes workers are chinese or indian or bangladesh, but I cant see the kitchen. I still have the right to eat there ?

A Muslim is allowed to eat any food made by a person whose faith and religion is not known to him, no matter whether that person touched it with wetness or did not touch it, provided that he does not know or is not sure that the food consists of what is forbidden to him.
It is permissible to eat the food (non-meat, e.g. pasta, salad, cake) and it is not necessary for the Muslim to question the person who prepared the food about his beliefs or disbeliefs, or whether or not he had touched the food, even if that inquiry is very convenient and natural for one who wants to ask.

But if anyone is 100% sure about the religion of the cook and if he/she is kafir then can’t eat food from them.