<human>: Can you provide a brief overview of the text?

My dad passed away a while back and it was always agreed between him and my uncle (verbally) that when he passed the sale of the house would go to me.  This came out to about 200k USD.

However now that I'm living away from the US and the house was sold there - it seems I'm facing significant tax implications receiving this money as a gift in the country I'm in.

My question is what are my options? Or what can I do?

1 - Is there a way to prove that this money is from my father so I don't have to pay significant taxes even though it was only a verbal agreement?

2 - If not, I was thinking of opening a US bank account. From my understanding there is an exclusion limit of up to 5 million USD for gifts.
I haven't lived in the US for a long time. In fact I've never really worked there (apart from any Summers I visited and took on a part-time job) and I'm now worried that I'm supposed to be filing taxes and am not sure how to go about all of this. I really don't want to shell out (I'm guessing its expensive) for a financial advisor and not sure if that's what I really need in this situation ( a lawyer?). Further it sounds like I'll need someone to do my taxes also :(

In the back of my mind I'm worried gonna get screwed on back taxes? Now that I'm reading up on things and discovered FATCA as well I'm scared of investing my money into anything now until I get this all sorted out.

Is there some sort of leniency in the fact that I really didn't know?
I moved to the EU at a young age and my guardians here never knew anything about US taxes and my father wasn't able to advise me as he didn't know either.

Any help is greatly appreciated!
<bot>: Dual Citizen, living in Ireland. Father passed away and via verbal agreement with his brother I'm to get half the sale of the house he lived in. My concerns?