Why aredo we comment about somethings we don't know?

I dont think it is a wrongs the right attitude to have because with this way we may convey the wrong informations to people.

it would sound more natural this way

Why are we commenting about something we don't know?

I think ithis is athe wrong attitudeviewpoint because with this waybehavior we may convey wrong informations to people.

I don't know

If you want this as a title, it should be capitalized: I Don't Know

Why is it so hard to say , "I don't know?"

Why aredo we comment about something/things we don't know about?

I think it is a wrong attitudebehavior because with this way we may convey wrongincorrect informations to people.

Since we're speaking about actions, behavior is more appropriate than attitude.
Information never takes an S at the end

We don't have to know everything, but we always have an oppuortunity to learn every time.

Why is it so hard to say "I don't know?"

I think alternatively, it's also good to write: Why is it so hard for people to say "I don't know?"

This makes it more clear that you are making a social critique, and not just venting about a personal problem---like you have a hard time saying I don't know.

Why aredo we comment about somethings we doaren't knowledgeable with?

do - indicates a habit

we don't know --> we aren't knowledgeable with
Clearer

I think it is a wrong attitudebackwards behavior, because within this way, we may convey wrong informations tofrequently misinform people.

It's not so much an attitude, as a behavoir.

misinform is a good word for what you are saying.

We don't have to know everything but we have an oppuortunity to learn every time.

Just a logic thing, I don't think these two statements are sides of the same coin, and using "but" to connect them is kind of meaningless.
I would write:

We don't have to know everything. We can just take the opportunity to learn.

I hope we learn interesting facts.

Are you talking about your own perspective?

I would write:
Personally, I always hope to learn interesting facts.