alright so you said you just started, so get your muscles used to being sore at first for max 2 weeks so you dont get injuries or just being sore for too long, and like how ur doing, start with whatever weight you want but you have to not be able to lift the bar at 10-12 reps. you do that for 1-2 weeks, and then you progressive overload and add weight, which means lowering the reps to an optimal 8 reps. with this you start getting used to the weight and eating 1.2-1.5x your body weight in protein. If you are trying to really get big, then add a calorie surplus into your diet. you keep on doing this routine over and over, which is repping 4x8, and in the next 1-3 weeks when you get to 4x10-12 with that weight, you progressive overload again. with excersices, just find whatever is most comfortable for you, what actually enables a mind muscle connection, and really what you like the most. two decent tips to give you is you do have to sort of flex constantly , because if you do, you develop more mind-muscle connection with whatever you are flexing. if you dont feel a connection with a muscle while doing an excercise, either switch what exercise you are doing, or look up how to do it correctly. the second tip is the hardest part about getting big, it isnt even going to the gym, but having to eat a surplus of calories, which is basically training yourself to eat a lot more, even if you are full. lmk if you have any other questions gang 🙌