Ok. Just for future reference. You don’t need to drill holes in pine like that if the screws aren’t near the butt end of the board. And pine is soft enough any screw will go right in. Also you pre drill holes don’t have to be so close screw size. You only need a hole like half the size of screw.

But for your current problem you can either move the mount over 1-2 inches left/right or up/down.

Or use these anchors https://www.homedepot.com/p/Everbilt-1-4-in-x-3-in-Zinc-Plated-Toggle-Bolt-with-Round-Head-Phillips-Drive-Screw-10-Piece-803932/204273383