Will hair loss treatment also be effective for hair volume?

Over the past few years, my hair has lost a significant amount of volume, so I am considering hair loss treatment. It is not that any specific area looks sparse, but my hair is generally getting thinner and falling out constantly. My hair density has been cut in half, and because it lacks volume and clings to my face, it makes my face look bigger. I suspect these are symptoms of hair loss, so I have tried shampoos that are supposed to be good for it, but nothing has helped. The thinning and lack of volume is really stressful, so would hair loss treatment help restore volume? I feel like I need to start by managing my scalp to address the root cause. If I receive treatment and my hair roots become stronger, will my hair become thicker and the volume at the roots return? I am also curious about the types of procedures available for hair loss treatment, the costs, and how long the treatment typically takes.