It is fundamentally to your advantage to be strong on both forehand and backhand. Regardless of the position you play.
There will be rinks where one side is much better enabling you to keep on that side in either direction.
Bowl to bowl though, it is easiest to adjust length on the same hand. If a bowl is in the way then consider whether you can go around it or under it by changing position on the mat or adding or losing weight.
Getting the consistency of weight on the day quicker will support you getting more bowls in the head which will increase your sides change of winning the end.
Top tip: Bowling to the jack is not your only target. You can often get shot without bowling to the jack