We are heading for 3 degrees by 2050, that much seems pretty certain and baked in now. Past that is murky but given how little action has been taken so far it seems we will probably speed run up to 6C by 2100. Throughout this entire period we have followed the worst case scenario that everyone called unrealistic. Turns out the IPCC has been underplaying the impact of CO2 for 50 years. Humanity can't change, unless we have a technological breakthrough this ends with only millions of humans left and most species on the planet extinct.