Interview tips needed and more

Hey everyone, I'm 25 years old (male) and I just graduated. Up until now, whenever I would work it would be by a family member or through a family member so I never had to take a legitimate interview. That being said, I had my first interview with a company that's only been opened for around 5 years but is growing super quickly. I think the interview went well, its been 2 days now but I haven't heard back, which I assume is fine since it's currently Saturday. I sent my thank you email a few hours after the interview and didn't get a response back. That being said, I believe the first interview went well being that it lasted an hour long. (I believe this company only does two, POSSIBLY three rounds of interviews)

About me: 2 bachelor's 1 associates, 5 years worth of management experience, managed over 200 workers, competitive being that I was a runner up in 2019 then the winner in 2020 in an academic competition with over 1500 competitors per event. Excellent multitasking, quick on my feet, thrives in a fast paced environment, dedicated, loyal, quick and eager to learn

About the company: Healthcare company been opened for 5 years now. Very quick and fast paced environment, lots of newer recruits. Their LinkedIn claims they'll pay 20-35 an hour for this position but mentions nothing about experience needed. It's a 9-5 typical type of job.

Ok, so here's why I'm here; I'm fairly nervous about my second interview since I haven't done this before. I'm not entirely sure how to answer questions. Do I stretch them out, get straight to the point, how long should an answer be, etc. Additionally, I know I should definitely negotiate pay. My goal is to make $71.5k a year annual bonus and some compensation for my travels (since I live about an hour away and would need to take the train) being in a 1 year contract. If they were to come out and say we're offering you $50k a year how do I respond to that? Do I say "while I appreciate the offer, I believe my skills set and value are worth somewhere more between the median to upper 25th percentile which is a range of $62k a year to $78k a year with an average annual bonus of $3k. Being that I've had 5 years worth of experience managing over 200 people, winning a 1500 people competition, getting 2 bachelor degrees and 1 associates degree all within this time even when covid shut everything down. Additionally (this part isn't true) I have offers ranging from $57.2k a year to $70.7k all with a one year contract plus benefits and compensation"? Is that too long, do I say it another way? What questions do you think they may ask and should/how can I also negotiate benefits (and the base I suppose) without sounding cocky.

Lastly I wrote down a few questions to ask after the second interview and was wondering on the input you guys have

1) during the first interview it was mentioned that the turnover rate here is blank, and it was discussed that a reason for that may be is because a lot of younger recruits are hired who soon want to move or for similar reasons. In your experience, would you say it's also because this is a fast paced job that not many people are equipped for? 2) what advice would you give someone who wants to excel at this position? 3) what do you believe seperates the skillset of the deserving median rate vs someone who deserves the higher pay rate? 4) if you hired me today, and I were to start working here tomorrow, how would you know in a years time I was the right fit for the company? 5) what attributes are not being met in the current department that you'd like me to meet

Please feel free to ask any additional questions that may enhance your answer!!!