Your friend probably isn't ignoring you on purpose.
He may have said that because he is impatient or wants to finish it quickly.
But that doesn't mean you have to blindly follow someone who is so outspoken in their opinions.
If you are offended by your friend's attitude or dissatisfied with the role he or she has been given, you should make your opinion clear.
In that case, try starting the conversation by saying, "Wait a minute! Can I express my opinion?"
--- p.31, from “If a friend makes a decision alone when doing group activities”

If you both bump into each other and your friend starts accusing you of everything being your fault, you'll feel embarrassed and wronged.
In such cases, first admit your mistake by saying, "I'm sorry."
I'm sure you were surprised and offended the moment we bumped into each other, but I still apologize first.
Then, it's good to carefully say, "Let's be careful together."
Rather than responding harshly like you would with a friend, it's smarter to speak gently.
--- p.47, from “If you speak harshly to me when we bump into each other”

If you said it out of concern and your friend is upset, it's because you have different opinions.
Or maybe he knew it, but he just didn't want to hear that from other people.
In that case, don't force it any further, just think, 'We both have different opinions,' and let it go.
And if you have something you want to say to a friend, rather than saying, "You have to write it!" or "Write it!", it's better to say, "Let's write it together~" or "How about writing it?"
--- p.73, from “If you give advice to a friend and they feel bad”

I want to have fun with my friends, but we might have different things we want to do.
All the time passes while I'm just thinking, 'What should I do?'
And I even complained, saying, 'I couldn't play because of you.'
In such cases, it is better to decide ‘by turns’ or ‘by majority vote.’
Try suggesting something like, 'Let's play what you want first, and then let's play what I want!'
Another good way is for the participating friends to each suggest a game, and then start with the game that the most friends want.
--- p.77, from “If we decide to play together but have different opinions”

When you're hanging out with friends, if someone curses frequently and harshly, just hearing it can make you feel bad.
In times like this, rather than speaking in a manner that seems like you're teaching your friend, try suggesting something like, "Let's not swear when we play together."
If your friend wants to continue to get along with you, he or she will try not to use profanity.
But if you ignore my suggestion and pretend not to know, it may be difficult to continue hanging out together comfortably.

--- p.91, from “If a friend curses while playing together”

My friend wanted to tell his story quickly, so he couldn't keep up with the conversation.
In times like this, you can say, "Don't interrupt me when I speak, just listen," and tell me what you want.
Listening carefully to what other people say is called 'listening', and it is a very important conversational etiquette for building and maintaining good relationships.

--- p.101, from “If a friend interrupts me and doesn’t listen”

You have to be careful about money being involved in friendships.
You lent money with good intentions, but when the friend you borrowed money from doesn't pay it back, you feel uneasy because you're worried about what to say.
If you do that, your relationship with your friends may become awkward.
If this situation arises, check with your friend directly to see how long you can return it.
Things that are really important to us, like money and time, we need to manage them well ourselves.

--- p.119, from “If a friend doesn’t pay back the money he borrowed”

There are cases where people invite friends to a chat room and then intentionally ignore them to make them feel like they are being ostracized.
If several people are chatting together, they may respond late to what I say.
However, if you feel like your friends are intentionally ignoring you, just say, "I'm going to leave now" and leave the chat room immediately.
If they keep inviting you, you should refuse, turn off your phone, and ask an adult for help.
--- p.137, from “If my friends ignore me in chat”

When you hang out with friends, you might make mistakes.
In that case, you just need to admit your mistake and apologize.
If you just let it go because it's awkward and embarrassing, the resentment will build up and explode someday.
It's also difficult to speak as if nothing happened or as if it's no big deal.
When apologizing, it is better to say 'I'm sorry' along with the reason why you are sorry.
If you say, 'I apologize,' you will convey your sincerity.

--- p.143, from “If you don’t know how to express your regret”