Modern linen sheets wear out fast. What you can do is use the top sheet for a bottom sheet like people used to do before there were fitted sheets.

Then when the bottom sheet wore out in the middle, they would cut the sheet in half length-wise and sew the good outside edges together in the middle and trim the worn part on the sides and re-hem them.

https://ladykemmanewlinenblog.wordpress.com/2017/05/26/draft-turning-sheets-sides-to-middle/

Textiles are relatively cheap these days, so people don't even know about tricks like this.

What I do is use linen top sheets only to get the benefit of linen while still enjoying smooth percale bottom sheets and pillowcases. Ditto for flannel in the winter. I really do not like flannel or linen pillowcases at all.