Hello! Today I'm gonna learn you how to attack with full dragons, strategy that'll work better against town hall level 8 bases. First of all, this is the composition of your army:
10 dragons
2 lightning spells
1 rage
You gotta take out an air defense with the lightning spells. After that, you must put the dragons on the side of the other two air defenses which are left. Put the rage on the dragons and wait for them to destroy the entire base. It's gonna work all the times, on 99% of the bases. Maybe you won't be able to do it the first time, but practice makes it perfect. Good luck!