Yeah hacking is somehow mixed, I tried saving and reloading trick too but found out two things. The first one, If you save while your sim is hacking and found out it is failure, if you tried to load again, even though the notification said you succeed in doing so, there is no job performance given (and thankfully no loss either). If you do it before attempting the hack progress and when you failed to hack again, every time you load and immediately hack again will always be failure. And this happen at max level programming and being focused while doing so.
Long story short, use precaution while hacking. Instead it is better to use charisma phone trick, you can queue Negotiate a bonus two times in a row while in reality you are only allowed once every 48hr if i am not mistaken. The chance of failure is lower I believe even without confident emotion.
Trying to complete computer whiz help but of course it takes approximately 1 week of your sim life before you can have make connection interaction while of course if you are following a career that 1 week to do it is equal to 2 promotions on any other jobs unless of course you choose to max Tech Guru career.