Alot of those sites sell fake sites which are bots. If you want it to just initially look like credibility then you could try buying some followers but then you really need to put a long term strategy to get real follower and how to keep them engaged. Shoutouts are a great way to get awareness for your brand.
Don't Buy followers. These followers aren't real people they are either fake profiles or bots. You might get thousands of followers by buying them but when those followers don't engage with your posts it looks weird.
hmmm. Buying followers is not a good strategy. Building targeted followers is a good way. you want people to enagage and interact with you. then send them what they want. send them good photos and content.