Level 1161

I really don't understand why you aren't using your boosters you seem to have more than enough to spare. If you are stuck on 1161 the best thing you could do is to use all your pre-game boosters the next time you play it.

I am on level 1487 and here is my inventory

Not so much scarce as the fact that I use them when I have them.

You have done really well to clear 226 levels without using any boosters, so seeing as you are stuck it surely makes sense to use whatever tools you have at your disposal.

Don't make the mistake of saving for a rainy day as they say. There will always be more difficult levels that you haven't played, but you will have won more boosters by then as well.

Apparently not, you have just completed 226 levels without using boosters. Congratulations on completing the level.