Can I Unstake my ETH on Lido?

Could you please clarify for me if it's possible to unstake my ETH on Lido? I'm considering staking my Ether to earn rewards, but I'm also wondering about the flexibility of the staking process. If I decide to withdraw my ETH at some point, would that be a straightforward process? Could you outline the steps involved in unstaking, and any potential fees or delays I should be aware of? Additionally, are there any conditions or restrictions that might prevent me from unstaking my ETH? Thank you for your assistance in clarifying this matter.