I'm not sure what you're looking for. There's a lot of info out there about fossil fuel subsidies and fossil fuel lobbyists. If you have some particular subsidy in mind then you can research it yourself.

Your claim

> Capitalists never advocate for subsidies.

was very broad and absolute, going beyond any particular industry or even the present day. I'm really not sure but maybe you meant something like "advocating for subsidies is not a capitalist thing to do." In any case I'm not personally interested in whether there is a "capitalism problem" or "socialism problem" going on.