Glad you like Brek'n'Bubble!
BnB is significantly trickier in some places, and sometimes even impossible if you've blocked the bubbles or yourself with a rock. You can't coax the bubbles out. You just have to wait. That can take quite a while sometimes. But all the levels are doable.
The game is also quite old and doesn't have any built-in cheats or trainers. Maybe I should change that?! We'll see.