@monotrox99 In the browser (not on mobile), go to "Settings" -> "Follows and Subscriptions" -> "Following Hashtags" -> "Add new Hashtag follow".
Hope this helps :)
@jweile yes that helps, thank you!
But I really think there should be an option to follow hashtag from search, because that seemed like the most obvious place for me.
Yea we had follow hashtags festure years before mainline mastodon. We also have a ton of other features they dont have.