I have started to scout but mainly to locate the enemy base on maps where it is random.

As soon as my orbital is up I use the first energy to scan the enemy base ( typically when my scv gets to their base it's too early and i can't see the cheese yet so I need the scan).

Don't. The money is really needed then and you can get all the information you need by patrolling his base beforehand*, or if he's Terran and you got there too late, just seeing what is at the top of his ramp and his expand timing.

I think the next step is hidding my SCV next to his natural to see if he expands ( which would give me a nice counter to build a barrack there if he canon rush or 6 pool, I just have to hide it behind the gas instead of right on the natural spot.))

Not hiding, sending one to check and back at the appropriate time. But yes.

I just need to stay focused and I know I can beat most of them.

Fought against another canon rush at lunch and that was close, I lifted a barrack to drop it near his base but he detected it or he was dead ( i chose a poor location), I made like 4 mistakes in that game or I would have beaten him ( killed first pylon with SCVs but went for building canon instead of second pylon, didn't try to repair or lift the barrack being attacked, didn't micro my marines well and dropped the barrack on his natural spot instead of hidding it inside his base ( it was Antigua))). Otherwise I would have easilly beaten him because he was all in on canons so even with my build up slowed down I would still have been ahead..

All of this can be solved by scouting early enough to see the forge. As soon as you see that you can use any means necessary to shut down that pylon.