Sonoma Update ruined my Mac.

Hello, I hope this is the right place to post this.

I am a college student and I have a macbook pro from 2020. I recently updated to the newest update, Sonoma, and ever since then I have been having so many problems. My mac won't sleep. Opening one app, like settings, sends the fan into overdrive, it sounds like a jet engine. In my backpack it turns itself on from sleep mode with the lid closed, or it just gets hot in sleep mode. It overheats to the point I can feel it on my back when I'm walking.

I looked around online and here are the things people include when talking about their macs.

processor: 1.4 GHz Quad-Core Intel Core i5

memory: 8 GB 2133 MHz LPDDR3

year: 2020

I don't know what to do since all my work is currently on this computer and I don't want to have to buy a new one since I love this mac so much.

Before this update my mac was perfect, it ran amazingly and I never had any problems with it.

What can I do, and does anyone else have these problems with this update?

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