What does DID look like for someone who has no idea they have it?
lots and lots of confusion and denial! some examples:
they'll obviously have all the symptoms, but instead of knowing that they're attributed to trauma, parts, and dissociation, it's very confusing and many people feel like they're going crazy
amnesia is often glossed over or purposefully ignored ("i just have a bad memory", "i drink too much and it makes me forget", etc)
lots of excuses about part behaviour ("doesn't everyone act like a kid when their favourite childhood show comes on though...?")
attributing things that in hindsight are obviously DID to thinks like the supernatural, imaginary friends, religious experiences, magic, demon or spirit possession, hypnotism, an overactive imagination etc
thinking everyone has these kinds of experiences, not realising that they're not universal
attributing symptoms to other disorders (especially BPD, substance use, bipolar disorder, seizure disorders, traumatic brain injuries, psychosis) or gender dysphoria (or otherkinity/therianthropy even)
remembering only some of the trauma, but thinking that that's all of it
feeling ashamed at their strange, inexplicable behaviour, and being unable to account for it
Here is another post on recognising signs of DID in hindsight.