20 puzzles is too many: just 4 are a good warm-up, but that is about it.
In a real game nobody tells you there is a tactic, or for which side.
20 games per day is too many. Play one 15|10 game per day and if you lost it,
then analyse it thoroughly so as to learn from your mistakes.
Videos are passive learning. You cannot learn to swim, to drive a car, or ride a bicycle by watching videos. Chess is the same. You have to do it: play and learn from your mistakes.
Most important under 1500 is blunder checking. Think about your move, consider 3 candidate moves. Calculate. Evaluate. Decide. Do not play your intended move. Check it is no blunder: does not hang any piece or pawn, does not run into checkmate. Only then play it.
That little mental discipline is enough to reach 1500.
If you want to get to 1000, do 20 puzzles a day to increase your tactics.
Make sure you play 20 games a day or more.
Also make sure you watch videos and do lessons.