The best way is to play standard chess over blitz and really think what you doing and once you done with the game analyze it. Tactics will improve your game and win ratio as well so try to mix things up a bit they work really well together in my opinion.
Does doing daily tactics is improve your game more than simply spamming more games?
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Have a fair balance/mix of everything. Long controls eg 60 30, short controls eg 10 5, tactics training, endgame training, basic opening knowledge, analysis of won/lost games etc.
Most importantly, it takes time to achieve good play, so do not expect your efforts to be rewarded immediately. Be patient.
Most importantly...keep all pieces defended well and do not blunder instant checkmates!
I usually just play games and watch youtube videos but after initial rise in mmr I stagnated and despite playing a lot dont improve anymore . Is solving tactics going to be more beneficial for me than normal matches?