Okay, thank you, @Stil1! Wonderful advice. I was just on vacation, and I wasn’t allowed to study… or play. Yikes… I guess that’s what happens when I play in secret. I do analyse tournament games using the method you described, but I guess I should do the same about online rapid as well.
A secret chess player?! Scandalous.
On a serious note, I believe you should analyze every game you play (if you want to improve, that is).
Because every game will have mistakes to learn from, and/or new ideas to be found. But if you don't actively look for these things in every game, they will remain invisible to you.
Make it a habit to immediately review/analyze each game, after it ends (if you're able to).
Whenever a game ends: it's review time. Make it your routine.
This can be difficult for some players - especially when they just want to keep playing, playing, playing ... but if you're serious about improving, post-game review/analysis should be something you do every single time.
You might not notice any improvement in the short term, from doing this, but I promise that if you stick to it, you'll notice significant improvements over time.
you should focus in rapid 15|10 as you can think more carefully rather than blitz and bullet which is 1min or 5min. More time, More thinking.