Singleplayer, with coop-multiplayer coming in second. Titan Quest 2 is being shown on August 2nd, and my oldest friends and I are talking about gathering for LAN for the first time since 2006!
I spend almost all of my game time on singeplayer games, I even play Elden Ring in Offline mode so I don't have to deal with invasions, stupidly placed messages etc. For me, online multiplayer has caused nothing but damage to the industry as whole; developers went from building settings and worlds with heart and mind, to simply relying on communities to provide the content/action.