How to supress or remove the feelings of love/lust from brain?

Afaik there are two types of people who exist one who do s** and very easily and one who never even had the opportunity by whatever means like less opposite gender interaction, insecurities or being shy non social introvert kinda. So I want to know how to abstain from thinking about these things as nowadays it's affecting my mental health and concentration is going haywire. For context I have been good in studies but now it seems the most difficult thing and my mind constantly thinks of having s** but i cannot do anything tbh. I'm not saying bad to anyone here just wanted to genuinely know how to suppress these things so I can focus on my life as earlier. I'm 25 if that makes any sense.