Hope this helps!!!
I totally understand feeling down or discouraged when your hair is not how it used to be
Stay consistent!! Take care of your scalp and keep the dead ends off

The routine I did to get my hair back:
Agent Nateur (holi locks) pre wash
Crown affair scalp scrub & hair mask weekly
Kerastase resistance line shampoo & conditioner (double shampoo)
Kerastase heat protectant
Living proof triple bond complex weekly
Kerastase blond absolu overnight recovery nightly
Kerastase resistance serum as needed

Things I do now / added to this:
Fable and mane pre wash hair oil
crown affair leave in conditioner (love!!)

https://liketk.it/4iezU

Now I follow a similar routine but more relaxed, switch up the products/brand names