You might like Servant x Service, it's not explicitly a romance anime, more of a comedy but it has some romance sprinkled in from what I remember. It focuses on a a few employees working for the local government at a DMV style office where they deal with customers all day. Light hearted and definitely relatable if you've ever worked a service job.

Golden Time was pretty good when I saw it 12 years ago. It's a college setting so a lot of high school tropes are gone and the characters act more like young adults. I wouldn't say you need to watch it, but it's not bad.

Ore Monogatari or "My Love Story" is a favorite for me and my partner. It is a high school setting, but the characters and the pacing make it worth it. If you give it a shot just make it to episode 3 before writing it off.

You probably wouldn't like Toradora but it's highly regarded. High school setting again with a lot of clichés, but the clichés are used really well, and make up for the fact that you've probably already seen the stereotypes play out before.