Did I screw up by waiting a week to contact this girl?

Met a girl in a supermarket. Wasn't super confident but got her number.

I didn't message her for a week because I was busy and I didn't want to message too soon.

I messaged this:

Hi

It's we met in last week how are you? She replied Took you a week to type this text? I then called her shortly after and she didn't answer. I then sent this:- Yeah, sorry, I've been researching the internet to find the perfect words that would totally sweep you off your feet. I made several versions, polled my peers, contacted a few professionals, and when I sent it I fucked up and sent it to the wrong person. Good news is, I found the right person and decided to just reach out normally. The bad news is, I have a date with Steve, my mechanic, on Tuesday. He's not my type, but I guess he does have a nice tooth. All joking aside I've been very busy and didn't want to reach out to until I actually had time to really connect.

Give me a call when you're free and we'll discuss our upcoming date.

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Was this whole thing a screw up on my part or is she simply not interested and there is no fault with my approach? People on reddit said I must always message the same day or next day otherwise the spark is gone and they aren't interested.

Thanks