Creating content

I want to start content creation again, I had an account I built up to around 3K followers but had some on and off posting, I was really consistent and then got injured and stopped posting, when I came back to it I tried again and my views were never the same, I then deactivated my account last April and haven’t touched it since. It’s a gym account and I’m interested in doing gym content/ self development content this time round and considering starting a YouTube to have longer videos that I can trim up and post to my TikTok aswell. I’m really unsure and it took me a while to get to 3K followers, any tips for growing my account would be much appreciated

TLDR: Should I start a whole new account with a new email for both the YouTube and TikTok or should I continue on my old account?