Here is a 3-3-2 formation for 9 vs 9 soccer games. Below you will find the pros and cons for this formation:

Pros

• Provides multiple options in the attack (#10, #9, #7, #11).
• If #2 and #3 get forward in the attack and overlap #7 and #11, can provide excellent attacking options for width.
• #9 and #10 are able to connect with each other to get forward to goal.
• Excellent formation to transition into a 4-4-2 in 11v11.

Cons

• Only one center-midfielder means if #7 and #11 do not recover centrally when team doesn’t have the ball, your midfield will be bypassed easily.
• With three in the back, #2 and #3 need to understand that they need to stay compact with the #5 centrally. If too spread out from each other when the other team has the ball, your team will get penetrated and scored on too easily.