The insoles that come with many cycling shoes leave a lot to be desired. Many are just there to provide basic support (if any) or simply to provide some aesthetic look to the shoe.
There are many brands of cycling specific insoles you can purchase. Many range from $30 and up but aren’t completely customized to your foot specifically.
Many riders spend hours at time in the saddle. We focus on fit, comfort, geometry and all sorts of little details. These hours in the saddle equate to days if you add them all up. We spend hundreds of dollars on lightweight carbon fiber shoes in the hopes that they’ll be the magic bullet to fix any knee or hot spot we may have while riding.
The point is, all cyclists spend hundreds of dollars dialing in their bicycle. A bike fit will cost you anywhere from $100 to $250 or more. Shoes that have a “moldable” insole costs $250 or more if you can find them in that price range. Why not take a look at getting a custom insole that fits your foot down to every curve, bump, and shape?