Can anyone beat my team?

You're not wrong, but that doesn't mean his lineup couldn't take two games out of ten.  Your original post doesn't ask for a team that could beat yours in a seven game series, only one that could take 2/10 games.  I was 100% sincere with my 86 Celtics comment.  You could Frankenstein a few lineups, or use actual rosters like the 2017 Warriors who would take a couple of games against your roster.  They wouldn't win a seven game series, but two out of ten is achievable.  

The 86 Celtics would feast on your team inside.  They beat Hakeem twice in the regular season and won the Finals 4-2.  They took the season series 3-1 vs. the Bulls and swept MJ in the playoffs despite him having a monster playoff series.  They swept the Lakers in the regular season.  Of course, Pippen and Rodman weren't in the league yet, and of course putting them all on the same team changes the dynamics of the defense, the point is none of those guys were too much individually for the Celtics to handle and they wouldn't be overwhelmed at any position by any individual player-- not enough to at least take two games.  

The 1985-86 Celtics had the highest basketball IQ maybe of any team, ever. They were as talented, confidant and incredibly scrappy.  The starting five featured four Hall of Famers (Parish, McHale, Bird, Johnson) and a guy who made an all-star team (Ainge).  I won't go so far as to suggest they could win a series outright, but they could take two games.  If you think I'm wrong, I encourage you to go back and watch Celtics games from that season.