Managed to be very lucky at ClubRiches and got 1000 Euros.
Only one problem: It is stuck behind a wager wall.

They don't count wagering your bonus as wagering in total, so it is stuck here.

Unless a kind person was to give me the money to claim the wager (which I doubt will happen), I guess it will be gone within a week.
Godammit.
Guess the lesson I learnt is deposit bonuses are better than no deposit bonuses.
Until you have wagered the required amount you don't have anything. These offers are specifically designed and engineered to make it look possible to win big amounts but they are often just traps to entice players to spend money. Now.. first off, do they expect you to wager 717 euros and then the additional 1000 euros to unlock it? Or does it just require 717 euros to be wagered? If you truly believe it is a legitimate site then there are ways to do that if you know someone with cash, where you should only lose a little bit. Find something like a soccer game where you can bet on total goals odd/even in the match, you might lose 50 euros but gain the ability to unlock it. Just make sure you're also aware of any required terms around the bet, they might require you to make extremely risky bets that would make it not worth it. Get out of the habit of thinking this is your money unless you can successfully unlock it - it does not exist to you.