I don’t know how Nothing support works in Portugal but I’d like to suggest that the brand gets a partnership with iFixit like Google does with their Pixel phones.
My previous phone was a Pixel 7a. Unfortunately I broke the screen with a bad case and had to search for repair quotations in Portugal. The cheapest and also the best option for me was to order an official screen replacement part from iFixit and getting the repair done at a local store.
I have injuries in my right hand, nerve damage. So I didn’t trust myself to do the repair. It was perfectly executed at the local store.