Did you follow the instructions in the video?
After peeling off layer 1, it's actually an adhesive surface for sticking up all the remaining dust in the screen. You need to use the scraper to scrape lightly along the screen protector before you lift up half to actually apply it to the screen.
And that is AFTER you did the first round of cleaning and dust removal with the stickers provided.
Even with this kind of improvement to the application process you can still screw it up then I think you should only get this in the future:
【淘宝】
https://m.tb.cn/h.UFM8QZq?tk=QNVXdNr63Hj CZ0001 「适用三星GalaxyS23ultra手机膜s23ultra钢化膜软S22ultra全屏覆盖全胶S23曲面屏s22新款微晶无尘秒贴保护贴膜」
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