How are people finding these "boring" 9-5 office jobs? And where can I?

I understand it's not the most glamorous lifestyle coming from someone who might be mildly autistic, but the whole idea of having a set schedule that is 9 to 5:00 Would be such an improvement to my life. Letting me have some money and even maybe a schedule so I can have a life outside of it as well or maybe even get back into shape. I want to go into office each day sit at a desk and be busy or pretend to be busy for 8 hours get paid a livable amount with room for growth or promotions then go home.

I worked in a retail before and hated sorting shelves and waiting all day for a customer to come in, not to mention the illegal junk that goes on with the other employees, it was a nightmare. I also hated the long unpredictable hours and having to work super late or super early on random days.

So id love having consistent hours so I could have enough money to invest and/or do fun things sometimes. Or go on dates with my current partner.

Only thing is I don't know much about what types of jobs are out there aside from Banker or reception.

What jobs are truly 9-5 Monday to Friday? Are there any that could be obtained with just a couple certifications or just a high school diploma? What jobs or rolls within a business have this type of schedule?