Autocut go away pls.

I like to upload many video to my tiktok post auch as my gameplay of favorite games. But tiktok auto cut my video and make my video too short to understand or content in video lost. I must go to editor menu on that post abd manual drag the video to full again (yash if that post have 20 video. I must do that to every) I haye this feature. How can i disable this trash feature