How do I make the player teleport like a chorus fruit would make them.

You can generate a random number, and then, you teleport the player to his coordinates plus (or minus) the random nubers
This teleports randomly the player at 5 blocks from his location, max
if (random(0,1) < 0,5):  <--- This is a random number to determine if the random range will be minus or plus current x
    if (random(0,1) < 0,5):    <--- This is a random number to determine if the random range will be minus or plus current z
        set (local nx) to random(0,5)
        set (local nz) to random(0,5)
        move player to x=x+nx, y=y, z=z+nz
    else:
        set (local nx) to random(0,5)
        set (local nz) to random(0,5)
        move player to x=x+nx, y=yn z=z-nz
else:
    if (random(0,1) < 0,5):
        set (local nx) to random(0,5)
        set (local nz) to random(0,5)
        move player to x=x-nx, y=y, z=z+nz
    else:
        set (local nx) to random(0,5)
        set (local nz) to random(0,5)
        move player to x=x-nx, y=yn z=z-nz