There are a few problems here.
Your third transaction depends on the first transaction, it cannot confirm until the first one does.
You have paid a low transaction fee on your transactions, ~65 satoshis/byte for the 2nd and third and ~55 satoshis/byte on the first. According to
https://bitcoinfees.github.io/#30m the current recommended fee is ~140 satoshis/byte.
You have a few options here. You can wait and hope it confirms, wait for the transaction to be "forgotten" by the network, attempt a double spending transaction that pays a higher fee, or ask a miner to confirm it for you.
For the third option, we need to know what wallet software you are using.
For the fourth option, you can contact the users
Quickseller and
macbook-air.