Um no, that is not what the "left" thinks.

There are a lot of radically different "left wing" ideologies. The quote, you claim to be left wing could probably be attributed to social democrats, maybe socialists, although not really. And that quote doesn't really represent a good summary of what they believe.

I, for example am pretty far to the left, I am an anarchist. I believe, that all forms of unjust hierarchy are a bad thing, be it a companie's CEO or a government and I advocate for flat hierarchies and the organization of society via specialized assemblies. And of course the ownership of workers of the means of production.

So, I guess I would agree with your quote, as I am against exploitation from the government and from billionaires. I just think, that corruption is the wrong way to look at it. The way, capitalism is going right now is not corruption in the sense that is an "error" in the system. Nor is it the fault of individuals or a group of people. It's just that capitalism is set up in a way, that it naturally produces and needs these crisees, like faciasm to once again violently reinforce itself and live on. Capitalism will inevitaly lead to concentration of wealth, because of the power imbalance between worker and employer. And this leads to imbalances in power, which you could call corruption.

So, in summary, your statement could be considered leftist, as that is pretty close to what leftists believe. It's just that a lot of leftists go a bit further and analyze the issue on a systemic level rather than an individual one.

Also, the right is not authentically against governmental corruption, look at them cheering on ice raids or the war in Iran. Wanting to spend more money in state violence is the most "pro-government" thing, I could think of.