Should i let my phone die everyday?

It's safe to let it get down to "0%", but it might not be the best thing for battery life. There's a reserve to prevent it from getting to a deep discharge state where the battery might be damaged. But there's certainly no need to do that on a regular basis. If you end up having it go to 0%, it's a good idea to charge it as soon as you can.

Regular or frequent deep discharge cycles will degrade any lithium cell faster than shallow discharge cycles and more frequent charging (partial or full). Basically, charge it whenever it is convenient to do so, for however long is convenient.

Good luck with it. Battery life is very complicated, and is filled with tradeoffs of convenience for longevity. However, the important thing is never leave a phone completely discharged too long, such as weeks after letting it get down to 0%. It's good practice to charge it soon.

Recharge your iPhone when it's about 20%.

Never allow it to discharge to 0%.

You're welcome yasmine153 !!