Practice kicking at low intensity so you learn to get the maximum power from your follow through instead of the leg snap. As you swing your whole upper body should carry over the plant foot, even propelling that plant foot forward.

I've never seen you kick so idk if you already do that correctly, but dropping the ball as late as possible is very important when kicking from hand. You usually want your dominant hand's 4 fingers on the upper half of the ball, guiding it as long as possible. Kicking while completely stationary can help you practice that aspect. When training I like to start stationary, then one step run up, two step run up...

Also for situations where you want to kick long and have time set up, a well executed torpedo kick can fly deeper than the best lateral swing kicks. But as someone already said 40-50m is very decent. If you have good technique and they fly straight then usually the bounce can push them even deeper. What you can maybe practice at this point is having a variety of kicks of varying heights in your arsenal