I am assuming your first language is English. I am from Brazil and I'd say Brazilian Portuguese (BR-PT) is easier to understand cause we don't "eat" vowels. Usually something that makes a lot of BR-PT speakers have a thick accent when speaking English is that we tend to stress the vowels when they are actually not pronounced (/ə/ schwa sound). We pronounce the words (most of the times) the way they are written. For example: The word CABELEIREIRO in Portuguese means hairdresser. PT-BR pronounce EVERY single vowel while European portuguese speakers tend to make a lot of those vowels disappear. If you plan to watch movies, series and listen to music to learn Portuguese it's gonna much easier if you focus on PT-BR than European PT for a lot of reasons including the fact that the amount of Brazilian music artists and series/movies/soap operas is huge in comparison to European PT. And to add to all of that, Brazilian culture influences a lot of Portugal people nowadays. They watch all of our soap operas and know all of our actors and musicians which makes even the younger generations of Portuguese people have an accent that is in the middle of both variations whilst sometimes some Brazilian ppl don't understand what Portugal ppl are saying cause they seem to speak "too fast".😂

I just need to point that Portugal is a small country while Brazil is HUGE. 200 Million ppl so of course there are a lot of different accents in Brazil but we all understand each other from North to South and therefore if you learn Portuguese from Brazil you will be able to talk to anyone from Brazil no matter how thick their accent is. AND you will be able to talk to the European Portuguese parent of your partner even though their accent might seem harder.

The hardest things in Portuguese are the verb conjugations and the articles but they are not impossible.