Lichess.org

Yes, they don't have that much stuff to learn from but the gameplay seems a lot smoother to me. I almost abandoned chess.com (I was a premium member) in favour of lichess and honestly I don't regret. If you happen to play chess more or less seriously, give it a try.

Neither Lichess nor Chess – Play and Learn, aka Chess.com, provide anything close to the service their public relations spin claims they provide. I have screenshots of vicious verbal abuse threatening violence from members of both chess app developers, sent well over 10 screenshots documenting all manner of cheating, game abandoning, delay tactics, and verbal abuse to Google (the attached screenshots are from Lichess, but similar experience comes through Chess.com). I also quoted Google's own policies for software app developers back to Google, documenting point by point the daily violations both companies were engaged in. Google did absolutely nothing but give me the run around for nearly a year. Conclusion? Big tech does exactly what it wants if it means profit, and ignores abuses of many kinds outright, then lies directly to the public with public relations statements that have no relation to their actual practices