How was your hair when you were using only the Hydrothermal products? I don't use any of the products your list here, but I have tried the JASON - it didn't do much for my hair, but one of my daughters really loved it, the other found it very drying for her hair; they're both natural. I co-wash with my same phyto conditioners because it's what works for me. And I think that's really important - you have to use what works for you.
When I first began my hair journey, my hair was a mess - damaged, dry, breaking, dull, rough - you name any bad thing, and I had it going on - my hair was terrible. I left the salon, returned to doing my own hair, finally returned to using phyto products exclusively after a brief stint of pj-ism. It took about a year for me to get over trying everything thing that was discussed on the boards. After that, another sixish months of consistent care, and my hair was much improved; sixish more months, and my hair was pretty perfect (for me).
I really think using products that work for your hair - with full awareness that what works for others, no matter how wonderful the raves, may not work for you. If hydrathernal naturals is doing what you need, then just use that one - is one of the most important things you can do for your hair. I would beware of clarifying too often - that will dry your hair. If you've got the moisture/protein balance correct, keep doing what you're doing, and the condition of your hair will improve. It's not likely your hair was damaged overnight, so you should not expect your hair to return to tip top shape overnight either. Make sure you check the pH of the hydrathermal naturals products - I'm sure the vendor knows if it's not listed on the bottles.
With the exception of AOHSR which I use for the scent on date nights (dh loves it), silk peptide powder, porosity control, and camellia oil, I stick with phyto for my daily hair care because I know this line of products works for me. If you know the Hydrathermal works for you, then ditch the cheapie conditoners and give your hair time to get better. A product/method to control the porosity of your hair - be it the roux, joico, or a simple acv - is important because your hair will be stronger and shinier and less likely to break because it holds mositure better when the cuticles are flat.
All of these words to say use products that work for YOU, be consistent, and give it time.