Normally I would not like to argue with anyone, especially with my older brother, but sometimes even if I warned him, either it was me or him who causes me to start an argument.

I'm the youngest in the family, and I have less social life than my brother does. When I make one small complain about a serious event, I knew it is impossible to not upset my brother, since he is more serious, we will always unexpectedly argue with each other. And yes, sometimes I will see it coming and I will try to avoid it by warning him not to talk about it OR trying to change subjects, but I could never outsmart him no matter what.

And when it comes to arguing, we always have opposite opinions and I could never make better points to prove my different opinions, I sometimes will feel angered and he will know it and will purposely tell everyone about my current feelings.

I also could never handle with my emotions, and I can't make better points for opinions, my brother can do both but I don't understand why, since we were born with the same genes and we should have the same personality.

But don't get me wrong, we don't hate each other, in fact we are friendly siblings, but I don't understand why this always happens when it comes to serious talks.

' we were born with the same genes and we should have the same personality. '

Not true! You were born with the same chromosomes, but not genes equally from each parent (although in theory they can be). If they did, you would all look like clones. Plus, personality includes many factors other than genes. Birth order, peers, countless experiences that each of you had that you didn't share, what you eat, it goes on and on.

Older siblings often like to be know it alls with younger ones, and if you react with anger, that just fuels the fire. Force yourself to stay calm and cool. Practice indifference and shrugging and walking away from arguments. Say 'Your obsession with being right is going to be your downfall' or something. Think of some clever responses that will be a little bit of his own medicine, hopefully. Or just avoid it all!

He does accept his mistakes and he does appreciate it, he loves me.

But the way he teaches me is not what I'm used to in any way. The way he teaches me things is like goad, he will urge me to agree with him or to accept my mistakes, and sometimes the mistake is true.

I do understand it works for some people but oddly not me (since I'm his sister), it never worked one bit, it always felt like it's forcing me to accept something I really hated.

But if I do tell him not to teach me this way, he will just make the worst goad and say "well I won't teach you then", it's like threatening me but at the same time it feels like it is telling me not to give up on learning from my mistakes. It's just confusing, but it's very irritating.

You allow yourself to be goaded for the most part, just by asking him to teach you. You are free to learn from someone else.
It just doesn't sound so bad. You love each other, and siblings go through all sorts of differences.

You will learn self control, and not let your emotions rule you completely and over react when faced with adversity, or conflict. Consider this time in your life "practice" for adulthood.

You need this practicing to deal with other adults who are not friendly, and don't love you.