I'm a White European immigrant to Denmark, and I was also surprised at the open racism here but you speak a lot of nonsense in your post.

Ive had danish banks immediately close my card and call me suspecting it of fraud because i used it in here for buying a 20aed sandwich or withdrawing 100aed

This is something NETS not your bank would handle, your bank would not know the reason they would need to contact NETS.

So here we have " people from arab country flying to Denmark? Surely they must be fudging the tests because arabs cant be trusted".

No they had specific and detailed report filed about testing in Dubai and closed the flights while they investigate. No other arab country is banned.

All this while everyone i know in Denmark doesnt give a shit about mask wearing

It's very rare to see people not wearing masks. If everyone you know in Denmark is ignoring it that probably says more about who you know in Denmark because the statement is simply not true for 99% of people in DK.

Denmark is both jealous of UAE and racist towards it

Most people do not think about UAE, in fact I have only heard positive things about Dubai in general from Danes.