You can add your website link in your TikTok bio and create videos related to the topics of your website. To reach a large audience and potential new readers for your website, follow these advices to get more followers and likes on TikTok.
Well, the best thing on TikTok is that you can grow your account organically even without buying any ads. That's the best thing right now. I do believe that organic reach will be decreasing little by little, as it did on Instagram. Anyway, use organic until it works.