Trying to find a hairstyle that suits me well

I feel like I struggle a lot in terms of my hair often getting tangled and matted in the mornings, also deal with a lot of shrinkage. I've usually worn some type of fro style, but feel like changing it up a bit to reduce the manipulation I'm doing to my hair on a daily basis. It's been growing for 5 years by the last photo.

First photo is what my hair can look easily look like in the morning, second photo is what I can shape it to/have done. Third photo is the style I'm trying out now with twists. I do not want it to lock and will redo it every now and then. What is the best way to keep my hair healthy in this style? I've read some suggestions that say oiling the scalp every couple days and using a moisturizing hair spray every day would be good.

Is that actually necessary? Does that cause a lot of product build up on your scalp? Just trying to figure out how to keep it moisturized & clean.