More concretely, have a look at the latest IPCC report [1], page SPM-16. Three of the five scenarios include temperature rises from 3 to 5 °C. Based on the last decade, the world has not reduced total CO2 emissions at all (not even slowed), despite its knowledge about climate change. Therefore, I have reason to believe that the three bad scenarios (intermediate to high CO2 emission), are more likely to happen than scenarios covering halted or little CO2 emission.
[1]: https://www.ipcc.ch/report/ar6/wg1/downloads/report/IPCC_AR6...
