Crack me

123456
Across
  1. 2. I am an article, there isn't a single article without me
  2. 5. Everyone does this when they want, aim something.. you're in this phase now
Down
  1. 1. I'm better than the better(clue ends) You usually get bored when "I'm" is to be replaced with "You are" but will happily replace it with bts(read this after cracking the word)
  2. 3. I'm not just somewhat and I start with one of your favorites
  3. 4. I'm found on the skin of many animals(dogs for ex.) but with a different spelling, you can spell me with a digit too
  4. 6. I'm more than many and leaves nothing