To summarize, Flores is saying that the Giants and Broncos were racist in that they scheduled interviews with him for their head coaching positions, but had already made their decisions before he actually came in and interviewed. The implication is that they met with him only to float the Rooney Rule, which demands that teams interview minorities for key coaching positions when they are vacant. He also accuses Dolphins owner Stephen Ross of trying to rope him in on draft tampering and attempting to bribe him with $100k per loss in pursuit of a better draft pick. Tangentially related is that Ross invested $17.5 million in a sports gambling startup just 2 years ago when a lot of this was going down.
Interesting times in the NFL. On Thursday, the Congressional Committee on Oversight and Reform will roundtable with former Washington Football Team Employees to discuss the rampant abuse that's taken place there. Following the other drama this year with Jon Gruden and reigning MVP Aaron Rodger's vaccine status , the NFL cannot seem to find themselves a single moment without something blowing up.
TL;DR - 2 NFL teams interviewed a talented African-American head coach but with zero intention of hiring him. Another team attempted to bribe him into breaking several league conduct rules over the course of his tenure there