Am I missing a part?

I bought this Ozark Trail spinning reel on clearance at walmart for my first reel lol. The line was all tangled under the spool. The blue part screws on top of the spool to attach it... but am i missing like a drag control piece or something because the line won't reel in or out it just goes up and down with the line not moving. I've watched youtube videos and looked at diagrams but i'm not sure what the issue is, and how can the blue thing be the drag control piece if it is. I appreciate the help!!

I bought this Ozark Trail spinning reel on clearance at walmart for my first reel lol. The line was all tangled under the spool. The blue part screws on top of the spool to attach it... but am i missing like a drag control piece or something because the line won't reel in or out it just goes up and down with the line not moving. I've watched youtube videos and looked at diagrams but i'm not sure what the issue is, and how can the blue thing be the drag control piece if it is. I appreciate the help!!