For resource collection and knowledge management, I’ve been using Obsidian and Typed. If you collect many general resources, Obsidian would work well, but if you collect resources for a specific purpose (i.e. writing) give Typed a try.
I went through a similar process like you, and I ended up using these two great tools.
Links: Obsidian - https://obsidian.md/ Typed - https://typed.biz/