I don't use TikTok but even in my mid 40s fell victim to Instagram reels. What's astonishing to me is that I have a level of self control that's way more than the average individual (for instance I have taken cold showers for ever).Even with such an otherwise resilience I fell victim to Instagram reels and their infinite supply of mindless entertainment. It took a week for me to unshackle and get rid of this imbecile nonsense. I still have the app on my phone but am actively not opening it. My hypothesis is that if you can do this for a continued duration, then the existence of the app won't bother you. You can't go around deleting everything from your life. You lead your life on your terms, despite the distractions.
So the addictive forces are quite powerful and for the average individual, it's really hard to get out of this addiction.