First thing’s first. Kevin Feige is quoted in 2019 saying that we won’t see the X-Men in the MCU for another 5 years.

“It’ll be a while,” Feige told io9 when asked about bringing the X-Men into the MCU. “It’s all just beginning and the five-year plan that we’ve been working on, we were working on before any of that was set. So really it’s much more, for us, less about specifics of when and where [the X-Men will appear] right now and more just the comfort factor and how nice it is that they’re home. That they’re all back. But it will be a very long time.”

With that being said, the report below makes sense. So as it stands, we probably won’t be getting the X-Men in the MCU until 2025. Marvel Studios is just waiting until the FOX contracts to expire.