Sooooooo much has changed in 2022... every year on YouTube the algorithm changes. If you follow what Casey did in 2017 or PewdiePie in 2015 and emulate that now, you wont grow like they did. Youtube favours different metics each year they algorithm is forever changing so what and how you make your videos, package them and present content needs to change too. I created a channel from scratch in 2021 - 2022 so get the most relevant up-to-date "how to" from someone who l did it!