Family member has the same ROI as you over 20/25 years. Down massively this year due to recent events. I just need to find someone who can help me understand how to do it. i.e do I need a USA address/bank account etc.
Without wanting to be disrespectful (I certainly don't want to insult you

), you do sound as if you may be just starting out in the investment field. Getting professional advice is great, but there's really no substitute for fully understanding things in a little more depth.
It never ceases to amaze me how many people totally trust their tax advisor (because they got a refund!) without really understanding the mechanics of how taxation works and how tax is calculated - maybe I'm just a boring anorak (I'm a Chartered Accountant btw) - a little or no knowledge can be dangerous (and expensive and painful!).
A great read if you have the time and want to understand a little more is Unshakeable by Tony Robbins
https://www.unshakeable.com/ Highly recommended - enjoyable and an easy read also.