This was my first experience using TikTok as well — I think those videos will always appear to new users because they get a lot of engagement. But if you swipe past them quickly, you'll likely never see them again.
If you weren’t offended enough, many of those G-cup Megan Thee Stallion fans are self-admitted minors crying “stop sexualizing me! I’m a kid!” while they gyrate. I deleted TikTok shortly after I installed it. (Not just because of that. The last thing I need is another attention-optimized vapid rabbit hole.)
You must be on a different TikTok than me. I'm using TikTok from Germany and I neither get NSFW content nor war stuff. It's all silly dance videos, lots of stupid pranks, wonderful musicians and a bit of English as a Second Language content for me.
Regardless how much of this is because of my location or my behaviour, it supports OPs point: TikTok can be very different for different users.
(I didn't think I'd live, as a man, to be offended by sparsely-clad voluptuous women, but there I am.)