It is unfortunate that you traded your card from Persistence as it is pretty forgiving like you mentioned, but it mainly is for players that can only piece a couple wins together. However, I highly recommend the Passage of Ferocity card. Based on your data, you are capable of getting 3-4 wins back to back occasionally. This is actually how I was able to go Flawless for the first time a couple weeks ago and we likely have similar statistics. At least then you can farm for more Adept drops on wins and trade your card to Saint-14 for a final roll before reset. Keep at it and you'll get there, it takes a bit of luck so you just have to play your best loadout and be persistent!