Hello and welcome, this is a super hard level that requires many tries. It is most effective to work in the middle to begin with if that is possible. Sometimes you don't have a choice, but working in the middle will open the board and give you space to make color bomb combos which you will need. Color bomb/wrapped candy combos will give most points, but color bomb/striped candy will clear most frosting and jelly, so it will depend on whether you need points most or to clear blockers most which you use. Striped and wrapped candies are useful and on a level with so many blockers you should use anything you can make.
The latest video here should give some hints and tips on how to complete the level.
Hope this helps.
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