If you’re struggling to “beat a brick down” you’re probably putting too much mortar on or not adopting a good “pair of toblerones” shape
Show us a picture of what your laying looks like just before you set the brick in place
When I set mine I scoop the mortar on the board, tip the trowel up on its side around 90 degrees and put it back, scoop again, maybe repeat the drop and pick up, so there is a nice consistent squareish sausage shape of mortar on the trowel, get it on the wall by tipping the trowel slightly towards my leg and doing a backhanded flick along the line of the wall, while rotating the trowel to point more downwards. The bigger the sausage the harder you flick it(to elongate it, as it spreads out along the wall), then use the trowel upside down with the tip in a dragging “pressing up and down” motion to spread it into two toblerones, bring the trowel along the face and back edges at an angle to shape the front and backs of the toblerones and use any picked up mortar for the perp of the incoming brick
How much and what shape is something you get to know by experience
If it’s too large, and you’re whacking the brick too much you end up beating the water and air out of it, leaving just solids behind, difficult adjustment, and then risk squeezing mortar out of your bed and all down your face bricks