Selling Alcohol
I believe yes as it is helping others in sin. Aiding others and doing it yourself are both sinful I think
Let’s discuss giving interest and paying interest in a separate thread.
Please note that in principle it’s still not right to get involved in trade of haram things. However, what Ghamidi sahab is saying in the above clip is that if one must get involved due to unavoidable circumstances then it can be excusable.