Are series helpful for the growth of your channel?
It depends on your definition of growth
What is growth for you?
Is growth the number of sales that come from your channel?
Is growth the watch time on your channel?
Or is growth your subscriber count?
If your definition of growth is sales, then making a series might just work in your favor.
Let’s say you’re in a niche that readily evolves and changes each quarter (like Meta’s new update: Facebook ads niche).
In this kind of niche, having a series titled something like “This Q update with meta:” could work in your favor if you execute it well.
What does it mean to execute it well?
Someone coming upon your channel might not necessarily be brought in by the first episode of the series.
They might have been brought in by episode 10.
For them to know that you have so much expertise in the niche, they need to see your other videos for that series.
You can make that easy for them by adding all the videos into a playlist, and to ensure they really do see at least one of your previous episodes, utilize the end screen function on YouTube.
This way you get them stuck in your ecosystem (like Apple’s closed ecosystem) and feed them so much value, that they have no choice but to buy what you’re selling
If your definition of “growth” for your channel is 'watch time" a series might not be the best option for you.
This is because the channels that are mostly absorbed by the need for watch time are those in the entertainment niche (Brainrot & others).
Here, each published video requires insane effort and commitment to be a standalone.
In this scenario every video made is made with the intention to go viral.
They don’t care for an ecosystem, and they don’t care for compounding.
“EACH VIDEO MUST BE THE BEST”
If your definition of growth is “Subscriber Count”, you can do with a series, and you can also do without one. It depends on your niche and goal with YouTube.
If you hope to make sales (business owner) you can make a series using the explanation i made above.
But if you hope to entertain, you don’t need a series