Anyone faced 4-5-1 v style??

Good day members, Im facing an opponent in the league tonight, his currently unbeaten in the league or in the CL. He mainly uses 4-5-1 v style or 4-5-1 flat. Was wondering if anyone has come across these formations and managed to win? His team is very young (20.1). Any suggestions will be appreciated.

Thanks.

4-5-1 flat vs use 5-2mc-1amc-2 st with long pass attack through the middle

Against 4-5-1 v style use 4-5-1 flat