Longtime reader, new poster. Honestly, I think you're using the wrong stuff on your nails. I also use dark polish and type all the time and can typically get my polish to last at least 5 full days before getting chips, often a week. I may get a bit of tip wear, but that's only noticeable to me. I typically paint my nails on Sunday. I occasionally add an extra coat of color on Wednesdays and that's it. This week, I did NOT add the extra coat of color - my nails are a vampy red-black (OPI Rajah Ruby) and it has been 7 days with only minor tip wear. I am in a professional setting (attorney) so I can't get away with chips (I think some people can, just not me).
In addition to using a salon polish, I ALWAYS use a tacky basecoat (I really like Orly Bonder) to help the polish adhere better. Then, I paint two thin coats and make sure to "wrap" the polish around the tips for one of the coats. A good, fast drying polish is important. For me, OPI is best. I use Zoya and China Glaze too, but I find that the lasting power isn't AS good (especially for China Glaze). Lastly, I add a good top coat (Seche Vite is the go-to brand). [EDIT: I've tried the Sally Hanson Diamond Finish top coat recommended earlier in this thread and I didn't like it at all. I got major peeling with it. All of the nail bloggers use Seche Vite.]
Don't give up! It's totally possible to paint your nails only once a week and wear dark colors but not deal with chipping.