How do I restore my Horizen wallet?

Could you please elaborate on the steps required to restore my Horizen wallet? I'm looking for a clear and concise guide that will help me navigate the process without any complications. Are there any specific details I need to keep in mind while performing the restoration? Additionally, is there a way to backup my wallet beforehand to avoid any potential data loss in the future? I'm quite new to this, so any advice or tips would be greatly appreciated.