Does Youtube Promotion Actually Work?

So I've always been curious to see if Youtube Promotion works or not for a small creator or a small channel. Safe to say I was surprised with some of my findings and thought it was worth sharing with you in case any other creators wanted to try it out for themselves.

Playlist: https://www.youtube.com/playlist?list=PLbwhcDCleVgYJKzcxaj08RJxpWmzyru_d

Gameplay Channel: https://www.youtube.com/channel/UCFPibOd6T234SgvzGAD4hbA
Instagram: https://www.instagram.com/MamushiReviews
Steam Group: https://steamcommunity.com/groups/MamushiReviews
Twitter: https://twitter.com/MamushiLT

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