How to solve encoding problem in LibreOffice?

Question

Character encoding

There is a pdf file that was made in latex. Now it needs to be converted to doc (while retaining all the design). When converting in online services, the encoding breaks. ctrl+c ctrl+v also breaks.
Even when I open it in chrome and just select it, the encoding is already broken.

screen

By googling, I found out that the document uses iso-8859-1 encoding. How to fix it with libreoffice?

Answer 1

and if the browser encoding is changed at the time of copying?
if there is no illustrator or other vector editor, you can download the trail
https://affinity.serif.com/en-gb/signup/trial/designer/
pdf should open there for editing - from there you can copy all the text and diagrams most likely too