LebBron James vs Michael Jordan, who is the GOAT?

People has always been argue thaabout who is the best player is in NBA history, LebBron or Jordan.

or you could say "People have always argued about..." to keep it in the past tense, but present tense makes a bit more sense since the debate is ongoing.

As a 23 years old young man, MJ is the best player I've ever "heard" of, while LBJ is the best player I've ever "seen"watched play.

The way you start this sentence is a little confusing. Normally if you start with "As a 23 year old, MJ ..." you would be talking about something that MJ did at 23 years old. A different phrasing would make it clearer that you are 23 and so you have never seen MJ play.

In terms of championship rings, MJ do wonbeats LBJ forwith 2 more rings, but LBJ has more final appearances than MJ.

Indeed, they are both great players in every aspect.

This sentence is alright, but sounds a little funny. Typically you would say "in every aspect of (something)." For example "in every aspect of their gameplay."

Two other phrases that could work here are "... in every way," or "... by every metric."

However, we have to keep in mind that LBJ is still atin his prime years, even though he is already 36.

either "at his prime" or "in his prime [years]" would be correct, but not "at his prime years."

So, he can still break the records, including winning more championships.

In my view, I vote for lebLeBron because of his influence to theon his team.

He can won thein championships in threewith different teams with different groups of playerplayers from three different teams.

It is redundant to say in three teams with three different groups of players, since a different team already means a different group of players.

It provThis demonstrates his leadership ion the team and his ability to controlling the games.

If you want to say "this proves" something, the "something" should be a full statement (not just a noun). For example: "This proves LeBron's leadership is what makes a winning team." But you generally can't say "this proves" + a noun. Instead, you could say "this demonstrates" + noun.

What's your view about thison this debate?

Often times, using just the word "this" is ambiguous. Especially when it refers to an idea ("the debate") that came up long ago in the text. It's often clearer to add the specific noun after "this," like I suggested here.

Thanks for the correction!