First off, every golfer will 3 putt, but in your case you indicate it is happening often and it's
good that you have recognized this.
I suggest first practice short straight putts (around 5-7 ft) to build your confidence.
A good putt will end up within 6 inches of the hole if not made.
You can practice indoor or outdoor, with the use of several dimes.
Lay the dimes about two feet increments on the line of the putt for visual targets.
I like using a laser light indoors which give me a good visual of the ball rolling towards the target.
Then after you gain confidence, you should learn to control the speed/distance of the putt.
Again, practice (5-7 ft) around the entire hole on a putting green with slope/break.
Then practice longer putts (25ft plus) and try to control the distance where you are achieving the putts
to stop about 5 feet or less from the target.
My goal is to have putts stop less than 2 feet past the hole on every putt if I do not make them.
How far you do hit driver and how wide is your lateral dispersion?
On the line of the front left greenside bunker, that's 317 from the 6400yd tee and its only 47yds wide between the water and the right edge of the cart path, and just a few yards short of that it gets as narrow as like 37 yds between water and the cart path.
If you hit something that went like 280 off the tee, youd have like a 55 yd wide landing area between the water and the cart path and only have a ~60 yd shot to the middle of the green for your second.
Seems like a lot of risk for a minimal reward especially when those bunkers are above the green level and the green slopes severely away from you if you are left of the green.
Especially seeing it from this angle those look like some nasty bunker shots or downhill lies to be chipping from