I’m nervous about these results

So the same brand (first response and clear blue) tests. I tested last night off a whim no 4 hour hold or any thing and both the lines were a line stealer! I then test again this morning with the same tests and the first response is still dark but it’s not a line stealer. And the clear blue was substantially darker should I be concerned. The only difference between both the first response tests where that one was a 1 minute which is the one I did at night and the other is a FRER. Don’t worry I won’t be testing anymore lol. I know this is a poll but can someone explain why the first responses didn’t get darker like the clear blue and why it’s just not darker in general

This was my line stealer I don’t have a pic of the clear blue one

This was the ones I took in the morning