The Venusian atmosphere has been found to be sufficiently out of equilibrium as to require further investigation.[32] Analysis of data from the
Venera, Pioneer and Magellan missions has found the chemicals hydrogen sulfide (H2S) and sulfur dioxide (SO2) together in the upper atmosphere, as
well as carbonyl sulfide (OCS). The first two gases react with each other, implying that something must produce them. In addition, carbonyl sulfide is
noteworthy for being exceptionally difficult to produce through inorganic means. Were it on Earth, this compound would be considered an "unambiguous
indicator of life". Further, it is an often overlooked fact that one of the early Venera probes detected large amounts of chlorine just below the
Venusian cloud deck.
It has been proposed that microbes at this level could be soaking up ultraviolet light from the sun as a source of energy, which could be a possible
explanation for dark patches seen on UV images of the planet.[34] Large, non-spherical cloud particles have also been detected in the cloud decks.
Their composition is still unknown.
Wikipedia
Also if you look at the chart on that page, around a height of 50-55km in the Venusian sky, the conditions are much more "normal" in terms of
Earth-like temperature and atmospheric pressure.
in the same way that bacteria have been found living and reproducing in clouds on Earth, it has been proposed that life could exist in the same
area on Venus.[8] Microbes in the thick, cloudy atmosphere could be protected from solar radiation by the sulfur compounds in the air.
As for the conspiracy stuff:
That's a great point about how everyone talks about life on Mars and the Moon, two places we know quite a bit about (relatively), and yet no one
seems to say anything about Venus - a place which is much more mysterious overall, and one where scientists freely admit life may exist today.
It's like it's no fun for them unless they can scream cover-up - that, and the fact that analyzing actual scientific data is much more boring than
searching for rocks that look like things.