I committed card theft, card fraud and tampered with evidence

I am F 14 I was walking down the streets with my friend and found a debit card on a wall. As you can tell from the title I took the card and pocketed it. I let the card rot in my coat for a couple of days before I decided to finally take it out, originally I had plans to just snap it or take a picture and send it online. It's not like those are better options but are still things I could have done.

Instead, I decided to use the card and I only spent £30 using a fake name until there was insufficient funds. I also should mention that another one of my friends used the card so he spent maybe £5 of that £30. After we used the money we just laughed about and went home and there was no feeling of guilt.

The next day I realized that I committed a crime, quite stupid really, but I began to have a bad feeling about getting caught which has only grown more. Yet, I continued to joke around but the stress was getting to me so I confided in another person, who told me to cut up the card. So I did. The card was cut up into pieces except for the name and number which is still on my person. Maybe about 30 minutes later I confessed to another person, explaining that it’s totally fine and stuff. Later on, I found the person who I spent money with and made plans to burn the card in the afternoon. So we made plans and during the wait till the afternoon I confessed to another person, I’m really bad at this.

It was afternoon and I met with the person and we walked to a secret spot and set alight the broken pieces of card and walked away. I don’t know why I thought that would release my stress but it didn’t, so I walked away with the name in my pocket and a continuous feeling of stress chipping away at me.

I arrived home and acted as usual. I’ve been told I seem paranoid recently and I’ve been feeling sick due to my stress. I needed to write a full confession to ease my stress for now as I’ve misplaced the name part of the card. I would like to say thag i usually struggle to feel guilt towards things but worrying feeling that I’m going to get caught and the paranoia is very different from my usual demeanor. This has affected my behavior and relationships with me being very fidgety and acting as someone who drank a lot of caffeinated drinks would if you want to picture it. I’ve been using the name part of the card and rubbing it to calm down, and as I don’t have it right now I’m writing this.

If you’ve read this far, I’d like to thank you, and maybe you could help me figure out what exactly I’ve committed and ways to ease the stress and guilt.