Brassy Ginger to Auburn help?

Hi lovelies,

So after searching the internet for weeks, I've decided to ask you guys here for help, since I could not find an exact answer to my questions.

I've been dying my hair bright to dark shades of red for the past 2 and 1/2 years, but recently I've let it fade out (see the image attachment below, but a bit lighter and waay brassier).

Now I want to go an auburn color, with a little of an ombre, like these pictures:

I especially love Adore's Paprika dye. My problem is that Adore's a no peroxide dye, so I have no idea how to match up my regrowth with my faded hair (I've never bleached my hair first; I've always used peroxide mixes)

The last time I put Paprika over my dyed hair, the color came out a dark red which faded to a really amazing auburn.

So my question is, how should I bleach/lighten my hair so that the virgin and old hair will come out similar? Is there a way to do it that won't be too damaging? (I'm very fond of my length.)

Or, is there a dye similar to paprika or to these images that I can use with peroxide?

Thank you 🙂