Yep, methane creates CO2 when burned. Atmospheric methane reacts with atmospheric OH to also make CO2 and water.

Methane was rebranded as natural gas and is used to generate electricity, heat homes, and cook food. Among other uses.

And while it’s a potent greenhouse gas it breaks down much faster than CO2 in the atmosphere

Incorrect. Methane breaks down into CO2. After it causes the atmosphere to retain significantly more heat. As CO2 it continues to contribute to climate change.