My opinion... there are two options and they depend on how cash strapped you are.
The ideal would be to get a B450 Tomahawk Max, Ryzen 3600 and 16gb DDR4. Then sell yours for what you can get and look for a used GPU on the MM. You may also be able to get the mobo, CPU and RAM from the MM.
If you really are very cash strapped then stay with what you have and upgrade the GPU, again with a used one from the MM.
The ideal would be to get a B450 Tomahawk Max, Ryzen 3600 and 16gb DDR4. Then sell yours for what you can get and look for a used GPU on the MM. You may also be able to get the mobo, CPU and RAM from the MM.
If you really are very cash strapped then stay with what you have and upgrade the GPU, again with a used one from the MM.