Ancestry DNA advice?

Melissa • 𝟮𝟬𝟮𝟬👧🏻 - 𝟮𝟬𝟮𝟭🧒🏻 & 🤰🏻

I'm thinking of getting this as the one I'm looking at has a discount. Are these mostly reliable? I'm half English and I'd love to know what my actual background is. Has anyone else done this? If so was it a good idea 😁 getting mine from Ancestry.co.uk