Ok I have decied instead of cutting I am going to be super strict with my diet and only cheat on Saturday.
Today I went and bought some more Tuna, Grilled chicken, and some new beef stuff with lots of veggies that I can steam.
I am still learning but I need help on getting bigger muscles.
Do I get bigger muscles by just eating more protein daily and work out ?
Oh and another question....
Is yogurt good to eat?
And I know white bread is bad but is it acceptable?
At your level, you'll get results by keeping calories around maintenance with an emphasis on high protein and healthy eating, and working out with compound lifts and progressive overload(keep upping the weight).
You won't notice the difference of eating/not eating a couple slices of white bread a day and shouldn't stress about it, as long as you aren't binging on the whole loaf

Obviously if you're on a low-no carb diet then its unacceptable but there's no reason to do that just yet.
Great work with the shopping! cant go wrong with chicken tuna and red meat.
As for strictness, aim for 90% compliance. Reward yourself for a successful week, etc. When I'm struggling with discipline, I use a points system where a workout/cardio session/day of good eating are each worth 1 point, so if i earn 12+/15 points thru the week, reward myself with a few beers and bowl of nachos and cheese
Do whatever you have to do to eat well and lift hard, don't worry about the minute details till you have to.