Progression happens over many different ways. This could be rep range, sets, time under tension, range of motion, etc…
Rep ranges = certain goals is just a guideline.
The only way you get big is by feeding your body more of what it needs and rest. That is where muscle growth happens. The body does not know weight…
You can get big off of light weights if you alter the time under tension, range of motion, and learn how to really contract your muscles properly for the mind to muscle connection. You don’t need to lift heavy to get strong or big… Your muscles have no idea what it’s lifting, it just knows to lift what you’re telling it to.
There’s all different variables to help achieve your goals… Tricking your body every few weeks by changing up the routine or the workout helps for muscle gains as well…
Being in a caloric deficit to then eating at a slight surplus over maintenance will help achieve blasting through plateaus and gain results as well.
Again - what are your goals? What are you currently working with? How are you currently progressing? Where are you being challenged?
There’s no one size fits all answer.
But remember that nutrition and rest is the most important factor to ensure all that hard work in the gym is worth something.
If you’re bodybuilding, the only way to increase the weight and get stronger is to eat BIG, you must fuel your body to help your body rebuild the muscles with enough volume to continue handling the stress you put it under… That’s why bodybuilders eat BIG and they eat in a very specific way even with supplementation. Your muscles need a certain amount of macro nutrients and micro nutrients to help it rebuild and build new muscle fibers…
Reps and sets mean half as much as to HOW you’re lifting the weight, HOW you’re doing the movement, HOW you are challenging the exercise.
The rep range for hypertrophy is popular because it provides a great pump, it is the balance between strength and gaining size over time, and is where most people feel comfortable while getting those beginner gains. Eventually you will plateau and need to find the difference in order to break through that.
Just like compound movement exercises are KING for muscle growth, but eventually you’ll have to visit those isolation movements as they have their place…