Another way of building a backlink to your website is blog commenting, and we definitely implement this as a part of our link building campaigns. Blog commenting on niche blogs manually is not time-consuming, also free, and provides you immense value.
Blog comment links are Nofollow but essential to maintain the Nofollow/Dofollow balance and trust signals that have an impact on web rankings.
Ensure to put a comment on the blogs that have previous comments (of course not spam) so that you know it is an active blog. Creating a genuine comment is very important and try to get the response of the author. This way, you have a better chance of approving the comment.