The 1st and 2nd lines
The new translation is better than the previous one, but that's too-much-free translation.
I don't think the difference is subtle between the original and the followings, i.e., your new translation.
笑えない日々を辿れるし
変わらない今も呪えるけど
I would simply use the "even if" construction, as the original means.
6th
You still are misunderstanding the intransitive 温まる.
9th~11th
Again, the 9th and 10th lines are the objects of 愛してみせる.
This ならば is not conditional.
17th
You translated 変わっていく to "will change", right? Then, where does "to turn" come from?
It's also possible to interpret that に indicates the result of change other than the particle to indicate the time of the action, as you did.
Is there a reason you just pasted pictures instead of posting texts directly?