Wothless stock question

Greetings all,

      I have a Robinhood account where-as I purchsed ABC company in 20 transactions, starting from June 2023, and the last purchase was 03/22/2024 as noted below. This company went bankrupt in 2024 and all is lost. The broker did not report these on my 2024 1099b, now I need to enter them individually.  Here's my question or two.

1. The transactions on March 3rd, 2024 - would they be considered short term, even though it's part of the same company/batch?

2. Now, I do not have a 1099b for these, so my only choice when entering these would be: ' Long Term did not recieve 1099b form', and of course short term for the March 2024 ones.  Am I correct in selecting this option? There's also ' Long-term basis not reported to IRS ( Covered or Non covered) ?

3. In the description box, I would enter for each line item: '50 shares of ABC company - Worthless' ? Is that correct.  Date sold would have to be 12/31/2024  I believe.  On the next screen, your presented with some other options and I selected 'Worthless stock'.  Does all this sound correct? 

4. After I enter all 20 into Turbo Tax, will I be able to file electronically or do I need to mail a paper copy to the IRS?  (I read this somehere).

That'all I have. Thanks guys!

20 buy transactions for the same stock.