30 is the maximum number of hashtags you can add to an Instagram post or comment. However, most studies show that the sweet spot is somewhere between 3-5. Of course, there are no hard and fast rules.
For some brands, more hashtags may be more appropriate, such as Blick Art Materials. They tag their posts closer to the max. limit of 30, but they keep it specific to art terms and art communities.
As a general rule, niche rather than broad is the way to go — you’ll reach people who are actually interested in your Instagram content. So it's recommended to avoid going the one-word #blessed #love #inspiration route. But again, it's up to you and it somewhat depends on your brand.