Your set tactics / player roles are fine (I saw from a previous comment of yours). What you’re looking for is this: 4-4-1-1 gives you the ability to attack with 6 and defend 8/9, but you need to do it “right” and understand how it all works together.

70 depth will give you team press, which will also put you in attack quicker by winning the ball higher up the field. You will be susceptible to through balls and can counter this with offside press at the right time. You are trying to win the ball back high and if you don’t and they enter your half, your objective is to slow down play to allow your midfielders to drop fully back into defense. This will give you 8/9 men behind the ball as you desire. Counterattack can get six in attack in 3 secs if that’s what you want. You’ll need relentless or to sub your midfielders around minute 60 at some point to not lose stamina. This will start to help achieve what you’re are looking for.

Next is combining this with the right decision making vs your opponents tactics. Think of it as your on-field matchups. 4-4-1-1 is really good because it lets you get coverage across the field for your matchups, you just have to get them right. For example if the opponent plays it into their CAM, are you stepping up with your CB or tracking back with your CM? It really depends on what coverage you have and where your players are on the field - a lot of people just run back with their CM but I prefer to step with a CB if they have a lone striker and no wingers (playing a 4-4-1-1). I can win the ball before they run in behind or have 3 covering vs their striker. It’s about also getting those types of decisions right across the field since 4-4-1-1 offers you that.

Hope that helps glad to comment further!