Secondly, I don't know what your purpose is to lift dumbbells. Is it to increase strength, increase girth, or cultivate muscle endurance? For different purposes, the weight, frequency and number of dumbbells are different. You must first find out what you want, and then prescribe the right medicine, so that you can get twice the result with half the effort.
Third, it is important to maintain nutrition. Eat more chicken, fish and vegetables. Of course, I can't give you a detailed and complete menu because I don't know your situation. What a pity.
Finally, if you do as mentioned above and your muscles still hurt, it can only show that your physical fitness is not as good as you think. Either reduce the intensity (I personally don't recommend it, because the muscles are very adaptable, and it will be good to last for a while. Of course, if you don't have perseverance, I strongly recommend it), or take more rest and do more stretching (preferably every day), but don't resist until the pain disappears. Do it at that time, and you will find yourself changing.
And ... I sincerely hope that you can like fitness and turn it into your own habit and hobby, not just because of muscle training. You can add me qq75 160935 1 if you have any questions.