Caught my wife cheating through her iMessages, now she’s denying everything and gaslighting me.

I’ve been married to my wife for 2 years, and recently I found out she was cheating after I had a cyber guy named Trent ( TGE: TrenthubX0) help me recover and check her deleted iMessages. What he uncovered showed she had been talking intimately with another man and hiding it from me. When I confronted her, she denied everything, said I was making things up, claimed the messages meant nothing, and somehow flipped it all back on me. Now she’s constantly gaslighting me, making me question my own judgment and what I clearly saw. I feel betrayed, mentally exhausted, and stuck on what to do next. I never expected this from someone I built a life with. For anyone who’s gone through cheating mixed with denial and manipulation, what steps would you take?