Surat an-Nisaa verse number 3:

"And if you fear that you will not deal justly with the orphan girls, then marry those that please you of [other] women, two or three or four. But if you fear that you will not be just, then [marry only] one or those your right hands possess [i.e., slaves]. That is more suitable that you may not incline [to injustice]."

The verse above is where polygamy is stated in Quran.

Contextually speaking, it's a case of war and orphans. Basically, when wives lose their husbands and therefore need a new partner for decency and modesty purpose. Does this apply to Today's society?

Also, can you prove to me that you will do justice among all your wives. Research shows that we are all biased. https://nmaahc.si.edu/learn/talking-about-race/topics/bias#:~:text=Why%20are%20we%20all%20biased,threats%20from%20the%20natural%20world.

With all the conditions above, you think that Islam tells you "You want to marry more than one wife? Go ahead! I have your back."