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Building muscle at home can be difficult if you don't have the right equipment. Even if you train using only your body weight, there will eventually come a point where the exercises become too easy, and you'll end up doing far too many reps before reaching muscle fatigue.
One of the smartest ways to build muscle is by reaching failure within a range of 8 to 12 repetitions. This is achieved through progressive overload, a training method where you gradually increase the weight based on how many reps you can perform before reaching failure.
The more repetitions you need to reach failure, the more likely it is that the weight you're using is too light, meaning it's time to increase it. For example, if you're lifting 25-pound dumbbells and can perform 20 consecutive reps with good form before reaching failure, then you should probably increase the weight to 30 pounds.
You also don't need to perform an excessive number of sets for each muscle group. Around 3 to 4 sets are usually enough to achieve excellent results.

One of the best home gym kits for serious training is this one. It includes a pair of adjustable dumbbells and an adjustable bench. That means you can train much more efficiently because the dumbbells can be adjusted instead of being limited to a single fixed weight.
Each dumbbell can be adjusted from 25 pounds all the way up to 80 pounds, and the weight can be changed in just one second. That makes progressive overload much easier. As you get stronger, you simply increase the weight instead of buying another set of dumbbells.
The bench is also excellent because it's adjustable depending on the exercise you want to perform. With this set, you can train almost every major muscle group, including your biceps, triceps, shoulders, quads, and even your back. It's a great way to start strength training, and honestly, it's about all you need if you want to get stronger without taking up much space at home.
Interested in getting one? Available here on Amazon