Your target is an individual choice, and there is no single rule for every bowler.
Some bowlers always targeted at the foul line, and others far down the lane.
What ever target you use draw an imaginary line down the lane, from the dots to
the pocket, and attempting to throw the ball along this line. Keeping your eyes on
your target until the ball crosses it is that keeps your body down during the release
so you don’t pull up prematurely.

It could be the right-handed bowlers playing on your side of the lane. If the
shot is also inside for them, they’ll constantly be moving in deeper, and eventually
dissipate the lane conditioner on the left side leaving you with no lane conditioner
to create the required skid in the front portion of the lane. Solutions: Move to the
outside portion of the lane where there’s less play, or switch to a ball that
creates less friction.