Is Staking profitable? In one word, yes. Staking is nearly as profitable as the mining or trading of cryptocurrencies, and without risk. All you have to do is stake (buy & hold) some coins in order to get added to the mining pool.
No matter what coin you have and how you stake it, there are few risks involved. For example
1. The pool is the one who held validation/withdrawal key.
2. If pool node went offline due technical problem, small amount of coin will be lost and they might use staking reward to compensate the losses.
3. If the staking mechanism require you to freeze/lock the coin, you either can't move the coin or must pay penalty fee.