What's ur opinion about immigration problems

I know this is scary to mention on this site but I was curious about everyone's opinion.

So I was talking to my friend about how some countries without naming specif.. it's Japan are kinda racist to immigrants that they usually ask them to act in a specific way for example: eating with a chopstick. Why would u think this is disrespectful if I don't use chopsticks while eating?
( also I know you guys are going to say not everyone thinks that way. I know it's just generally speaking)
Or drinking at work parties as a way of showing respect. Someone might be having a problem with alcohol for health reasons and all.

So what I'm trying to say.. They'd expect you to respect their culture by imitating them but it's like they cannot accept that you might have different opinion or can't do like they do for wtv reason.. (also not everyone like this but you know what I mean ╥﹏╥ Istg I mean no hate)

So my friend said that they do this to keep their culture and not get affected by emigrants cultures and stuff. I personally believe that culture is pound to change you take the good deeds of each other and improve for better but What do you think of this? Am I just close minded lmao ┗( T﹏T )┛