To understand what staking is, please visit here:
Whilst the risks of staking assets are minimal, it is never entirely risk-free.
Risks could involve, but are not limited to:
Forgetting your seed phrase/private key (not being able to access account).
Not having the correct securities in place and being susceptible to a hack.
Not earning rewards.
Locking an asset into a staking/un-staking period for x amount of time and not being able to sell when desired.
Paying a fee to un-stake an asset instantly.
A drop in the asset's price.