How can I stop thinking about masturbaiting whenever I have nothing to do?

I (17M) have been compolsivly masturbaiting whenever I'm doing nothing of substance or I'm bored. I physically can't help it but whenever I'm sitting down doomscrolling, or just doing nothing, or have some free time, my brain always starts thinking about masturbaiting. I genuinly can't help myself. I have alot of free time, so you can imagine how often I... yknow. I'd average its around 3-5 times a day, and I have no idea how to snap myself out of it. Some of the fetishes I've developed disgust me, and have changed the way I see people close to me negativly. I don't want to be like this but I don't know how to take the first step to quiting masturbaiton. please help.