I'll gather the current science on humans' role in climate change to address your question.
According to the scientific evidence, humans are the principal cause of recent climate change.
Scientific consensus
•Yes, the vast majority of actively publishing climate scientists – 97 percent – agree that humans are causing global warming and climate change.
•Nearly all actively publishing climate scientists (97–100%) say humans are causing climate change.
•A 2019 review of scientific papers found the consensus on the cause of climate change to be at 100%, and a 2021 study concluded that over 99% of scientific papers agree on the human cause of climate change.
•Today, 97% to 99.9% of climate scientists agree that climate change is happening and that human activity is the primary cause.
•Papers that disagreed with the consensus either cannot be replicated or contain errors.
Evidence from Leading Scientific Organizations
•NASA: "There is unequivocal evidence that Earth is warming at an unprecedented rate. Human activity is the principal cause."
•The U.N. Intergovernmental Panel on Climate Change (IPCC) said there is 95 percent certainty that humans have caused most of the warming of the planet's surface that has occurred since the 1950s.
•IPCC science report: climate change unequivocal, human influence at least 95% certain.
•The report says it is unequivocal that climate change is occurring and confirms there is at least 95% certainty that human activities are the principal cause.
•It is extremely likely (95-100% probability) that most of the warming since 1950 has been due to human influence.
•The IPCC AR6 presents a strong body of scientific evidence that it is unequivocal that humans have caused the earth's climate to warm, with a likely human contribution of 0.8 to 1.3 degrees Celsius to global mean temperature since the late 1800s.
•Also: it is unequivocal that human influence has warmed the atmosphere, ocean and land.
In its Sixth Assessment Report, the Intergovernmental Panel on Climate Change concluded that it is unequivocal that the increase of carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) in the atmosphere over the industrial era is the result of human activities and that human influence is the principal driver of many changes observed across the atmosphere, ocean, cryosphere and biosphere.
Mechanism
•Since the industrial revolution in the mid-1800s, human activities, such as the burning of fossil fuels and the clearing of land for agriculture, have increased the concentrations of greenhouse gases in the atmosphere.
•The planet's average surface temperature has risen about 2.12° Fahrenheit (1.18° Celsius) since the late 19th century.
•Climate modelling predicts that human activities are causing the release of greenhouse gases and aerosols that are affecting Earth's energy budget. Now, a NASA study has confirmed these predictions with direct observations: radiative forcings are increasing due to human actions.
•"It is direct evidence that human activities are causing changes in the Earth's energy budget."
Human vs. Natural Factors
Natural climate variability exists, but it cannot explain recent warming:
•Humans are changing the climate 170 times faster than natural forces.
•In the industrial era, human activities have been, and are increasingly, the dominant cause of climate warming.
•Scientists find no convincing evidence that natural variability can account for the amount of global warming observed over the industrial era.
•Solar output changes and internal variability can only contribute marginally to the observed changes in climate over the last century.
•While there are natural factors that affect the Earth's climate, the combined influence of volcanoes and changes in solar activity would have resulted in cooling rather than warming over the past 50 years.
Quantified attribution:
•This translates to a likely human contribution of 93%–123% of the observed 1951–2010 change.
•It is extremely likely that more than half of the global mean temperature increase since 1951 was caused by human influence.
•The 20th century increase in CO2 and its radiative forcing occurred more than an order of magnitude faster than any sustained change during the past 22,000 years