In your mods folder, unzip the mods that are still zipped (the ones that have a 7z icon). They should be package files once unzipped. Remove the zip files once you have the package files.
Move your sims 4 folder to another place on your computer. Start the Sims 4 and let it generate a new folder this way. Quit and then copy and paste the following folders and files from your original sims 4 folder to the new one : saves, tray, options.ini, mods, screenshots, custom music, recorded videos. Restart the Sims 4.
If your mod still doesn't work, the latest patch might have broken it. You should check if it's compatible with the latest patch and keep all your mods up to date.