Reddit mentions of Tigi Tigi Bed Head Matte Dry Shampoo for Women, Oh Bee Hive!, 5 Oz , 5.0 Oz

Though I'm not sure about bleaching it cause it's fine. I have fine hair too and I've lost many a hair because of it. I would suggest doing highlights to add some dimension. red. Your natural hair color already looks perfect on you but red highlights would look fun. It wouldn't be that much hair either so you wouldn't end up losing as much hair. There are also ways of thickening it up though. If you don't end up dying it at all or if you do. Castor oil, neem oil, and many other things have helped people thicken their hair.
https://www.amazon.com/TRESemm%C3%A9-Expert-Selection-Amplifying-Mousse/dp/B001VFL88Q/ref=sr_1_8_s_it?s=beauty&ie=UTF8&qid=1541316373&sr=1-8&keywords=24+hour+body

https://www.amazon.com/TIGI-Matte-Shampoo-Women-Ounce/dp/B00DPICES0/ref=sr_1_fkmr0_1_s_it?s=beauty&ie=UTF8&qid=1541316445&sr=1-1-fkmr0&keywords=tigi+bed+head+oh+my+bee+hive

https://www.amazon.com/dp/B003N21ULK/ref=twister_B06XWDZXCW?th=1

https://www.amazon.com/Not-Your-Mothers-Tropical-Banana/dp/B01EVQ39X8/ref=sr_1_8_s_it?s=beauty&ie=UTF8&qid=1541316644&sr=1-8&keywords=sea+salt+spray

this happens to me towards the end of my wash cycle -_- (i try to only wash my hair once a week, twice tops) so to stretch it out, i use a verrrrrrrry soft boar bristle brush combined with this spray- works super well! they have it in different scents, but this is the one i've been using for the past 6 months and it has argan and hemp oil which are both great for hair! just squirt a little on your hands, run through the parts prone to tangles/tangled parts, and brush through with the soft boar bristle brush. i use this one :)

then afterward if you feel like your hair is a bit flat/limp (i also have fine, delicate, easily breakable hair so i know the styling struggle!) i will squirt a littttttle dry shampoo on the crown/roots, will brush through with a round boar bristle/nylon brush, and then use a hair dryer for less than 30 seconds just to give it some volume. works pretty well for the last 2 days before i wash again! i prefer to use batiste with a hint of dark brown because i'm a brunette and it doesn't leave any residue, and they also have lighter brown/blonde. this one by tigi is also ok but is definitely stickier than batiste i've found

since my hair type is like yours, i've noticed on the days i keep touching it cuz i have this nervous hair flipping tic, it gets greasier and knottier A LOT quicker, so try not to touch it at all!! hope i helped! :)

Edit: sorry the links formatted so weird- I input them on a desktop but just now saw on Mobile they came out all sorts of wonky. I'm sorry about that!! 😖

Good luck! Try this brand and it should work for you!