The best thing you can do is learn more about your hair. Here's a link to help you determine your properties Live Curly Live Free - Curly Hair Basics Once you determine your properties, you can look for folks with hair like yours and see what they use (in signatures.) It will also help people, help you when you ask a question.
Fine and/or porous hair generally like/need protein.
My fine/low porosity hair never met a protein it didn't like. I do at least one PT a week and use a lot of products with protein.
3a (Corkicelli), highlighted, fine, low porosity
HGs: Anything Sevi; Curly Kinks Satin Roots, Curlycue ReNew and Coil Jam; homemade FSG and okra gel; soap bars; UFD Curly Magic; Botanical Spirits Jellies, CJ Repair Me, Aloe Fix
You won't know until you try! Every one is different. Start with a "light" treatment (maybe just a conditioner with a lot of protein), and see if you like the results. If so, try a stronger PT next time.
2C/ Coarse/ Normal porosity/ SW Florida/ Salt & Pepper
Cleanse: AIA cowash, TJ Tea Tree Condish
Condish: JC Too Shea, Tresemme Botanique
Stylers: flax/okra gel or KCCC + CJ PP or JC Spiralicious
Experimenting with Got2B Ultra gel and loving it so far!