1099-B and K-1

I bought and sold Proshare ETF UCO in 2020. 1099-B from broker showing Proceeds $596 and a $6200 in Noncovered short-term loss (report on form 8949 part 1 with box B checked). But later I also received a Schedule K-1 from Proshare showing:

Part II  Current year income loss: -6133; Withdraw & distributions: (717)

Part III 8 Net short-term capital gain (loss): -6006; 11 Other income (loss): -125

Question: I already entered 1099B info from my brokerage in my TurboTax return. Do I need to enter the Schedule K-1 info in TurboTax also? I tried to also input information from Schedule K-1 from Proshare, it seems double counted. Now in addition to what the loss I have from 1099-B, I also have a loss carryover to future years. Is this correct? My TurboTax also shows Contracts and Straddles with a loss of -700. What are "Contracts and Straddles?"