In fact, the following method is not effective and can sometimes even harm the promotion of your profile. I would advise you to focus on increasing your reach through organic promotion through content.
Study the interests and preferences of your target audience, as well as the activity of similar profiles, and observe their promotion strategies and methods. Analyze which posts get the most and least engagement, which hashtags are used, which topics are covered, which bloggers/influencers are being worked with, and so on.
By collecting such insights, you can adapt your own strategy, as well as increase reach and engagement and attract a new target audience.