What to do in this situation ?

[backmeoff]

Hi everyone,
I am a newbie so please be nice !
1) Is it normal to only win 3 hands out the entire 6 decks shoe playing 1v1 with the dealer ?
2) to stay under the radar is it better to use : (1blacks 20 reds) or (1 black 3greens 5 reds) , or (7 greens 5 reds) ?
3)I’m only in for ~60hrs and already doubled my roll and I’m expecting to hit a down swing at anytime I’m playing with 6decks, 75% pen, H 17, double any 2 cards, DAS, no RSA, no surrender, 1-16 spread, hi-lo, and no side count, top 10 out of the ill18.
Is it a good move to scale down to a 1-8 spread or what would be a smart move to still max EV while minimize damage when negative variance kicks in ?

Thanks in advance!!!