The gonorrhea vaccine is now available on the NHS. Go and get it for extra protection.

“Porn addiction” is not clinically endorsed. The body of scientific research actually hasn’t found any causation of mental health or sexual health issues. But there are correlations.

The term “problematic porn use” (PPU) is commonly used by clinicians but it carries the bias that the problem with porn always lies with the person watching it.
However, often, the distress is felt by the partner of the person watching porn, not the person watching it.