If you've already decided you think it is not possible, then definitely it is not possible.

Give yourself a chance. Maybe after a few years (or decades) in Spain you'll realize that you love it in Spain because - culturally - you are Spanish. It is really not a far-fetched idea.

Spain is not just one culture. The people in Malaga, Bilbao, Valladolid, Tarragona, Valencia and Madrid are all different culturally, and all Spanish. You might just suprise yourself.

You're obviously open to new things or you wouldn't be emigrating. Be open to becoming Spanish culturally, or at least Spanish-ish!