Thank you for your question! Firstly your strategy of following other people who like similar products is a great start and you should definitely continue that as it is a great way to organically grow followers.
In terms of attracting/having more reach to potential customers, my recommendation is to boost some of your posts. You have control of your budget e.g. you could spend $2 a day or $10 a day, which means more people will see your posts but also follow you.
Below is an article with more information about boosting posts
I help run social media pages for e-commerce stores with a range of one product stores but also niche stores. If you ever have any further questions or want more help don’t hesitate to reach out email@example.com
Have a great day and hope this helps!