Almost 800k TikTok followers since 2022 - need some help/advice

Hello everyone, so I blew up on TikTok in 2022 currently have close to 800k followers. I had an awesome product and sold it over the last couple of years. Probably sold about 15-20k orders. Originally I was dropshipping the item, found the manufacture bought the inventory and then shipped my self.

Entrepreneurs caught on and started to sell the same thing. People started selling my product and it just kinda faded out. I’m at the point where I have run out of product, don’t really sell it anymore. Either i shut down the business due to no sales or find something new.

I was younger right out of college, didn’t know anything about e-commerce at the time and I didn’t have any guidance. I definitely could have made this product sell for the rest of my lifetime but just didn’t have the knowledge that I know now. For example I didn’t create my website the same thing as my product name. Someone took it and is set up for life.

Also, I really haven’t posted any videos for the past year

Not too sure what to do at this point.

I feel like I need to maximize on my TikTok followers and start selling something else, just not sure what.

Forget to mention:

Not only did these entrepreneurs take my product, Walmart, target and a few other companies started selling it as well ughhhhhh

Anddddddd…… everyone stole my videos to create their ads and promotions