Game one: - Pawn grabbing and missing the two move trick.
Although at that stage White was preparing an opposite coloured
Bishop attack (Qf5 & Be4).
Earlier. 17...Nf6 and contend the open file was one way to go.
And you let this win slip through your fingers?
You are correct, better was 32.Bf5! You missed it.
Game two: Yes 19...Nc6 was the move. the simple discovered
mate on g7 should have been seen.
Not to sure if Black is out of the woods after 19...Nc6. Plenty of
attacking/saccing ideas still in the position.
Black would still need to be very alert.
After 19...Rd7? it was over.
White played well though and grabbed his tactic when it appeared.
Game 3: A good game this. Yes you were caught up in the heat
of the battle and missed the skewer.
NO EXCUSE. Basic elementry tactic.
Studying the two Bishops won't help.
Study one Bishop and one move shots.
The King and Rook on the same diagonal should have lit up like Christmas tree.
(In the final position 41...Bf5 is very strong, threat Bxh3 and e5+
...41.Rc7+ Ke8! 42.Rxf7 Kxf7 0-1)
I like your overall play. It's good, there is hope.
You have a nice gun.
You know how to load the bullets,
You know where to point the thing.
Now all you have to do is learn how to pull the trigger.
You are not in a slump - you are not tatically complete.
chess is 99% tactics.
You missed a Queen and Knight mating pattern, A Bishop forking
King & Queen setting up a mating net and a simple King and Rook Skewer.
Thse chess books you have, those chapters at the begining you skipped...
...get back and look at them. Simple standard tactics.
And YOU MUST SET THEM UP ON YOUR BOARD so your mind can see
them, store them and use them.
So it's tactical puzzles for you my friend.
Here is one.
Set it up on the board
White to play (it's from an actual game).
What happens if White takes the Bishop (1.Kxf1)
What should White play?
Come back in a few months and post us a tacical brilliancy.
Good Luck
(I'm determined to get another thread going about 'Luck in Chess'😉 😉