Free videos are scattered. The courses (like The Grandmaster's Secrets or Your Winning Plan ) build on each other to fix your specific weaknesses.
You are a beginner (under 1000) and can benefit from general YouTube content. gm igor smirnov all 9 chess courses better free
Free content requires you to curate your own training. Smirnov provides the curriculum, reducing the "research" time. Free videos are scattered