Nothing wrong with you. She is just a time waster and is there for the validation. Anyway, here is a tip: when you use the "guess we are dating now" opener unless she responds with a straightforward "no" your response should show you are owning it, but also be fun, playful, flirty and give her room to invest. Try responding with the classics like "Mhm. We should get a dog" or "Yup. Go tell your parents".
"Then you can try to impress me in other ways". After this don't take it sexual. Try to vibe over food. When she responds to this text with something like "and how is that?" you go with "Your ability to eat a whole pizza". This kind of convo can be easily turned into pizza and wine at your place.
If she was really busy she would tell you why. She is just making excuses. It's time to call her out on it and either you meet or simply move on. Don't waste your precious time on people that do not deserve it. Go with something like "I'm really busy too, but still I can find some time to socialise"
Your texts are too long. Always match her level of investment and try to get her to invest through short but on point texts. The answer here is simple. The rule is: If she prizes herself just ask her why. You are the buyer and she is the seller. Just remember that. Here just go with "Interesting...and why is that?"
No, do not double text her, especially not with "good morning". Don't chase. The level of investment must be equal at this point. It's her turn. In general good morining/good night texts are something that you send to your girlfriend.
I would say "no" to all of that for now. Simply tell her "I want to hang out with you, not your friends". Don't be afraid to say what you think.
Don't get overly gamey and don't chase. Make this look natural and just get to know her a little and make her invest before you soft close. Ask her the classic PWF lines "are you from here originaly" or the "give me the basics..." line.
If you vibed and built comfort investment then the close is ok and go for something like "You misspelled "when is this date" or "never been on a date?". If the vibe isn't strong you have to take the convo in another direction and make her invest.
I would flip it on her with something like "Seems like you are not up with the latest fashion trends...tsk"
Stop sending her vids and pics. Don't be her sexting buddy. Btw the double texting after 10 hours was a bad idea and the "morning gorgeous" was even worse. Don't chase and validate her so much. If she doesn't respond again imo it's call out time.