Help me with the best gift cards

Hello, everyone! I hope you're all doing well. I'm reaching out to request your guidance regarding a situation I often encounter. It's quite common for me to struggle with the decision of what to give and to whom when it's the birthdays of my friends or acquaintances. Recently, I've come across the concept of gift cards! I would greatly appreciate it if you could share your insights on this topic and also provide information about any services that offer gift and discount cards that you might be familiar with. Your knowledge and recommendations would be highly valuable to me.