I especially recommend blitz for beginners. It will mercilessly expose the gaping hole weaknesses in your game (i.e. hanging pieces). The way to improve at chess quickly is to find your blind spots quickly and train them.
Most people struggle to get good at chess because they are too afraid to lose, and too afraid to actually do the "practice" part of playing which is to analyze your losses to identify which areas you need to train.
Grinding is not how you get better. Grinding can be fun, and can be a great way to blow off steam. Both of those are awesome reasons to play chess. But if you are serious about improving quickly, do what the pros do. Don't grind aimlessly. Play a lot, don't be afraid to lose, and do legit post-mortems to give you feedback on where you need to pay more attention.
Most people struggle to get good at chess because they are too afraid to lose, and too afraid to actually do the "practice" part of playing which is to analyze your losses to identify which areas you need to train.
Grinding is not how you get better. Grinding can be fun, and can be a great way to blow off steam. Both of those are awesome reasons to play chess. But if you are serious about improving quickly, do what the pros do. Don't grind aimlessly. Play a lot, don't be afraid to lose, and do legit post-mortems to give you feedback on where you need to pay more attention.