Depends when you last coloured your hair Hun. I would recommend a colour b4 remover(not stripper-remover contains no peroxide) but the issue with that is it won't do anything to your roots- so you might end up with some dodgy two sections of brown once a lighter brown dye goes on. Strippers contain peroxide and are effectively bleach, not something I'd play around with if you have no experience.
It's pot luck if it turns out alright, but in this case id say see a salon. Best to get the worst part done by someone else. You know me, I'd try anything, but when I had my hair stripped I did give in to a salon to get that lil bit of help.
Lightening can change your hair to weird tones so it's important to get the right brown to counteract that. It's not as easy as "ash over red" as most like to advise!