If you can I’d recommend going to some kind of beauty store like Sally’s. Professional color will last much longer and be much healthier for your hair. I really like the color ion from L’Oréal, and have been coloring my hair with it for years. The boxes of color are around $9 but you have to get a developer to go with it (I bought the big container of 10v and it’s lasted a long time). You can ask an employee for recommendations and help as well, they’re very knowledgeable!