Getting Noticed on TikTok:
Instagram/Facebook/Twitter and more rely on your follower network for its visibility. The only way for your post to get noticed outside of your network is through hashtags.
TikTok is different, the algorithm uses a totally different way to do all this and it determines how your content is seen. TikTok's AI studies your content and decides to show it to people who have a history of liking those attributes. So, it's in your best bet to niche down as much as possible so you're hitting the right people.
TikTok also has a host of areas where you can get noticed that are non-AI dependent:
Hashtags on TikTok are like the cherry on your sundae. They're not necessary to go viral, but they do help put your content where it can get noticed. TikTok uses hashtags to create challenges and foster community. TikTok will introduce a new group of hashtags each day. Hopping on these trending hashtags can help you get noticed by others who are also using them. It's not necessary to use them.
TikTok organizes content on soundtrack pages to reveal videos that share the same soundtrack. Soundtracks can consist of music, movie plots, or original audio from any TikTok. Using newly released music that is anticipated to trend fast can help you get seen.
Special FX Page
Similar to soundtracks, TikTok organizes content on Special FX pages to show all the content that uses those effects. Using a newly released Special FX can help your content get seen.
Live streaming is a great way to get noticed. Each time you live stream, TikTok highlights your profile photo when they serve your content to let people know that you're live.