The Sims Resource (TSR)
The Sims Resource (TSR) is my favorite website to find the best CC from thousands of creators daily! It has Alpha CC and Maxis Match CC hair, clothes, furniture, accessories, skins, etc. They have a premium membership that allows you skip adds and to have a basket just like you're online shopping, where you can download up to 200 items from your basket into a single ZIP file! I highly recommend this, it's easy access and if you don't have a membership you only have to wait 10 seconds per download! They also have CC available for Sims 3, Sims 2, and Sims 1!
Link to The Sims Resource (TSR): https://www.thesimsresource.com/
To download clothes from: CLICK HERE
To learn about how to download them (CC/Mods): CLICK HERE