Need advice regarding TikTok API

Demo: tiktoks.netlify.com

I made a prototype to parse API from TikTok. I have a question regarding their API. When you make a fetch call to the following address, it works in browser:

Call: https://m.tiktok.com/api/item_list/?count=30&id=1&type=5&secUid=&maxCursor=0&minCursor=0&sourceType=12&appId=1233&region=CA&language=en

Does anyone know if it is possible to collect GET request from TikTok server in Express? When I tried it, it returns a blank HTML page. Seems like there is a security method in place to detect whether the request came from a browser or another source. I wanted to make a SPA to browse through TikTok videos and profile pages. Looks like, it is not that straightforward considering API. I am a newbie in servers, so any advice is helpful.

How profitable is it to buy tiktok likes?