tldr: net neutrality means everything that uses an internet connection is treated equally. EX: cox communications offers a "fast lane" for gamers on their networks, but if all connections were treated neutrally, everything would be as fast as possible by default without the need for an upgraded service plan.

Internet infrastructure companies have to treat all traffic equally.

For example, without net neutrality, Comcast could elect to throttle any streaming services that they didn’t own / co-own. So great speeds for Peacock and Hulu, but was a Max, Netflix, AppleTV, etc all get throttled unless you pay up.

Can someone tldr what’s net neutrality?

Simplified, your ISP cannot favor one company over another when delivering their website content to your computer. All data must be delivered equally.