Okay, first nobody is going to jail over a mistake on a Form 1040. The federal government would prefer to collect taxes that are owed rather than provide you with free room and board.
It sounds as though you are actually owed a refund, if the unreported transactions resulted in a loss.
You need to use Form 1040X to file an amended tax return. TurboTax will guide you through all the steps. Your cryptocurrency transactions from Form 8949 will be reported as capital gains or losses on Schedule D. Please read the linked article for more information: https://turbotax.intuit.com/tax-tips/tax-payments/tax-tips-for-bitcoin-and-virtual-currency/L1ZOgU00...
Now, about the Form 8949 transactions. You are allowed to report summary amount on your tax forms, as long as you attach a full, detailed hard copy to the tax return. Since amended tax returns must be filed by mail, this will present no problems for you.
Please read below for more detailed information about amending your tax return.
