I am sure there have been times you won games, did you also come out then to complain, or you only complain when you incur losses. The job of a casino is not to babysit their customers, fix your gambling addiction and gamble responsibly, if you continue pushing blames to other people, you'll not make any progress.
OP really has got to fix his gambling addiction first, but so many deposits IMO should not have been allowed or should've had at least raised a red flag to Stake's compliance team after the messages that he wants to be self-excluded. I counted 7 of them, including 3 large deposits initially. A five-figure sudeposit should definitely trigger a source of funds check, no?