Childhood Trauma and Memory Loss?

I remember becoming self aware at age 3 right down to what I was doing at that time and I remember an OCD memory from that same year and I remember a couple of trips to the local mall with my family, a brief memory from a camping trip, a few trips to the toy department of a discount store and my dad building tiny HO scale toy cars for me and my brother as well as my fourth birthday but, nothing else but, about maybe 10 memories afterward but, I have no memory of my fifth birthday or the sixth birthday either.
My dad left us at what I thought was age 5 for me but, now I wonder if it was actually when I was four and I do have two disturbing memories of abuse from when I was 4 and in the memories I see the actions taking place externally as though I'm someone who is near by and watching it unfold. I do have some memories of being five and a few more traumatic memories of that year and more normal memories at age 6 but, there is a lot missing between ages 3 and 6 and I don't understand why.
Is this normal for very young children who experience sexual abuse or any other kinds of trauma?

Yes, this is quite normal. Actually you got good recall of your childhood considering this. Therapy will lead to healing from this.

Having Gaps in memory is common with abuse. Same for the feeling of watching externally like it happened to someone else.

Yes, this is common.

I ditto what everyone else said. I had abuse my first 20 years, and I always 'see' it as though it is on a TV screen and happening to someone else. This is the way I distanced myself from the feelings. Sounds like you are good at recall--I had therapy to help me see the patterns I had learned that were unhealthy. For me, it made all the difference. I wish you healing and love.

Thank you, all for your answers. I am appreciative of that.

I dont remember anything before the age of 7 except two traumatic memories and one teacher.

My past is hazy...separated...an image or two...bits and parts...no sound...no “movies”, a flash here and there, so frustrating I refuse to try anymore. Having baby pictures don’t help.