your almost getting their,
The temperature is rising because of the sun natural cycles and precession
As per the
https://hotcopper.com.au/posts/74200201/single
no doubt you will posit that it is because of co2 levels rising.
And that is where people have been misled ,
A correlation between oceans temperature and CO2 shows that the temperature rises precedes CO2 level rises,
I.e. CO2 variations lag Temperature variations, which is what you would expect and what is happening.