You'll see a great change, to be honest. It took me almost a week to delete all those unnecessary accounts I had. I had to write emails to customer service and request my complete data deletion. It was a lot of headache, but finally, it worked. Now I'm where I think it's good to be, and my screen time has reduced drastically. It's definitely good for your mental health and overall health and fitness. If you used a password manager, I think the process would become a little bit easier. Now I'm fully on my way to moving to open source apps only—no hidden trackers, no ads, just service.

For YouTube, I still use it, but not with any account; I use LibreTube and NewPipe. Both are open-source, and the best thing is you have a lot of control over what you see, like no shorts, no personalized feed, and no comments shown, etc. It helps me a lot because I don't get distracted.

That's definitely okay; you should keep it as long as the people around you and your business are ready for some other alternatives. I was able to delete Gmail because I was already a Tuta user and only used that one for everything, but now I've completely shifted to ProtonMail. Still, I'll keep my Tuta mail.