I think you are right not to be satisfied
I think it might have been better with 4 lines
possibly lines 2 an 4 rhyming and the other two lines without rhyme
You could have tried free verse ( without rhyme ) but not all poets are comfortable writing this way.
However with the title of the poem "expectations" I think it would be well suited to the style of Enjambment...why don't you give it a go ?