Buddy
I would highly recommend the whole family watches The Social Dilemma on netflix. It gets the point across, really well, that all the big tech companies have an incentive to make social media and phones as addictive as possible, and build multi billion dollar businesses on attention farming.
It also touches on topics like body image, depression, and fomo and so on.
Secondly, I would recommend getting agreement and buy in to put controls on the phone, maybe for those two specific apps at first. Either ban them completely for a couple of weeks or heavily restrict them. It can be done as a trial period even, to see what works.
I was worried about myself getting sucked into YouTube (and being annoyed that I was losing hours when I'd rather have been doing other stuff) plus I was worried about my teenage boys being the same.
Google turns off parental controls at 13, so we mutually installed Block to setup blocks on specific apps and try to enforce a bed time routine. He has the pin to change the setup on my phone and I have it to change the setup on his.
I think it's worked, "ok" in terms of getting to a sensible/mutual understanding of the issue and avoided some of the parent/child arguing.
Changing tack, I haven't read all the comments in here but it sounds like people are already posting "what aboutisms" etc. which is sad to see, and hurts my soul.
Do you really think any one persons "will power" can stand up to hundreds of millions of dollars in psychological research and experiments on tens of millions of users? Nope!
Imho there are *some* parralells to the tobacco industry where they were spending huge money to advertise their products, and make them seem as cool as possible...whilst lobbying hard, denying the harms etc. etc.
If people want to read more, there is quite a lot of science and research out there about depression, attention spans etc, as well as a growing number of countries that are banning and limiting phones in various ways.
There is the who study from a little while ago as a start.