Common practices to optimise RP

Hi there 🙂
On Internet, when i'm searching how to optimise my Ressources Packs, i only find results about how RP can optimise Minecraft and that's not my objective. I created 6 RP based on my 77 games need, they bring lang files, items/models, textures, a lot of custom sounds (about 75-85% of my RPs weight). As i'm comfortable with datapacks, but still a beginner/intermediate in RP, i was  wondering if there are common practices (or a doc) to get optimised RP that load faster and are less heavy on download.
My heaviest takes in charge 80% of the games i have and cost 485,2 Mo, i already try to get lighter sounds using Audacity, i gained about 72Mo on 2 Packs yesterday be lowering just a bit the sound quality but it can't really be heard. On other hand, i tried avoiding loops in a single sound and coded loops in my datapacks for music looping.
Sorry for approximative english