Sore, Aching and Weak Legs

I have had numerous tests over the years regarding my aching and weak legs, Drs continually tell me that they think it is muscular.

I have been given pregabalin, Gabapentin, Tramadol, Paracetamol, Ibruprofen gel, none of which work. Have changed statin tablets and blood pressure tablets as they can cause leg aching but still no joy.

Anyone experience intense leg pain/aching and what helps for you?