I would recommend filing your 2021 return to report the sale and establish the CLCO. even though all details of the trades (sales price, cost, gain/loss) may have been reported to the IRS, it has no way of knowing if you had security transactions that were not reported to it. so if you don't file 2021, you may have the CLCO disallowed when you file 2022
if the trading is all you have you can probably file for free (even free if there are other items to report) so there is no reason not to file
you can e-file for free using a provider approved by the IRS. Turbotax is no longer a freefile provider.
https://apps.irs.gov/app/freeFile
