I have lost thousands on slots due to being greedy and not taking the winnings. My biggest loss was around $3000 a few months back in the Sweet Bonanza slot because of not relying on the original plan. I usually keep buying the "bonus feature" but on that unlucky day, I have bought more than 140x bonus buy. The 1000x is a very good hit considering you have started a new journey on Roobet. Congrats anyway, hope you will keep good track.
Do not worry, you didn't lose thousands because of your greed, gambling is something we spend money on to have fun and you had a lot more thrilled moments than many people could ever hope for, that is what happened to you. Stop looking at gambling and money as a lost money, you did get something in return, think of how much time you spent on gambling here, I do not honestly have a certain hour but if there was like a steam type of "played time" thing here I am sure it would be well over 50 hours for me, I don't know for you.
Consider all that time and during that period how much money and interest, hype, excitement, upset, anger, fun, happiness and many other emotions you went through. So, whatever you have "lost" here it wasn't lost it was well spent (unless you lost it in a minute) for all of those emotions for all those hours.