Learn to hit it solid then you have built a swing to hit it far. Now you can practice and learn to speed up your golf swing, be in control and hit the ball farther.
In order to create more speed, you need to have a swing that allows the speed to happen
You don’t swing harder to hit the ball farther. You don’t contort your body into funny angles to create false leverage and speed.
You create an efficient swing that hits the ball solid, then you try and speed up your rotation because your body will be able to do it.
Your arms need room to swing. If they don’t, no amount of lag, forward shaft lean or widening the arc will help you.
Actually, forcing those things to happen will reduce the room for your arms to swing and reduce speed.
One last thing… Standing farther away won’t necessarily create room for your arms to swing. Actually, it can reduce the room.
Proper posture for you, rotation, tilt behind the ball and no forced action is what creates room.
BTW-Center hits at lower speeds hit the ball farther than off center hits at higher speeds.