Best products for dry hair and split ends?

Right pic - 2-3 years ago

Left pic - my hair now

Sooo I’ve come a long way! I used to dye my hair back n forth from dark brown to blonde every so often and completely ruined my hair. I lost almost all my hair at one point, looked like I was sick... it was so thin and so dead and just awful. So I kept cutting the dead parts off as it grew, and trying to get it all one length, been using different strengthening/thickening/moisturizing shampoos/conditioners, and everything seems to be finally helping. I put coconut oil in it once in awhile too. But I’m just looking for the best products for dry hair and split ends. I also will be going to get a hair cut to cut all the long pieces off as I don’t like the “v” hair cut, I like more of a straight across even hair cut. So that should help some too.

Edit

I will be cutting my hair to that black line