I’ve done similar mate, had £6k pending withdrawal on pink casino and reversed it because it took so long to go through. £20 spins on fishing frenzy and it was all gone in less than 15mins lol, these games can be complete shite sometimes.
I only make £1200/month as a support worker and needed that to get a car for commuting this winter, here I am three months later and riding my motorcycle in this crap weather and still no car. Had to use Gamstop in the end or else I wouldn’t have had funds for Christmas.
Chin up mate and focus on the future, I’d suggest using gamstop as it’s been a life saver for me literally. Had some really low times after losing a whole paycheque hours after getting paid.