Do you have a budget? Edit your post so people can see what the budget is.

For pillows and toppers, 100% natural latex lasts a long time because it doesn’t compress easily. This will solve the pillows going flat problem. There are firm options available for toppers.

I don’t have any advice for fixing the problems with the mattress.

“My pillow” sucks. My mom has one. It wasn’t long lasting. The filling is all clumpy and hard now. I don’t recommend.

I have never tried purple pillow.