>>7722262
Try to draw it freehand/intuitively but place the horizon line at least to keep vanishing points in mind. If things go wrong, then break it down analytically, using the perspective knowledge that you have learned. If there's knowledge or techniques you are missing, look in books or video courses for them. When you are looking for specific answers, it's easier to find the knowledge you need.
Specifically for drawing figures in perspective, drawing the ground plane they are standing on is useful. And wrapping lines around their forms to see how their limbs are in perspective. And drawing a box around them too see where they sit in space.
Tools like perspective grids or 3D mock ups in Blender can help too.