Hello @RuthAnn107!
For the men's underwear/swimsuit, the fix might be to run the Sims 4 Studio batch fix for underwear tags. You can download Sims 4 Studio here:
http://sims4studio.com/ (membership is required but free) Once you have it installed, from the main page choose Tools from the menu along the top then Batch Fixes; CAS; fix male swimsuit/underwear EA recolors missing mesh
You can use also Sims 4 Studio to find your other broken files. On the main page choose MY CC. A new window will appear and on the left will be a list of all of your CC with a window to show the creation. You can then look each file to see if it is broken in the window. The program has a delete button if you chose to delete the file from your game. If you want help finding the original mesh, just tag me @Bananas_45 and include the name of the package file and I will see what I can do.
I know for sure the wedding dress is curbs_DressWedding_7_RECOLOR_2.package and you can download the original mesh here:
https://www.thesimsresource.com/downloads/details/category/sims4/title/wedding-dress-7-%28original-mesh%29/id/1379339/