I would definitely not stake on an exchange, even if they're one of the more reputable ones.  Not your keys, not your coins--you never know what kind of snag is going to prevent you from accessing your coins, and if they're on an exchange it's all out of your control.

As far as cloud mining goes, are there any such operations that aren't a scam?  It seems like nobody around here mentions cloud mining anymore, so I assume they've gone by the wayside.  And yeah, I'd stay far, far away from them.  There are much better, less risky ways of earning passive income.

Talking about sharing experience, I would like to share my experience about stacking tron. when the price of each tron was around 0.02 dollars I bough some trons and started staking on my tron wallet it was the first experience and I would earn ~2-3 dollars per day, if you also count rising of the price my passive income gone insane. Another, experience was holding some bitcoins on Binance earn and taking profits, while I was enjoying the bullrun I got some interest over my money. However, here I would like to note where are many scammers abusing people by promising them passive income or even doubling their money so I would suggest to avoid the projects giving you too much interest in short term and do your own research.