On the specific point about getting a US bank account in the EU. I’m in the UK and have used Wise [1] (née Transferwise) to set up a ‘virtual’ US bank account. You get a US account number to send to your client / plug into Stripe, and the funds are paid into the Wise account, which you can then transfer into your home currency account at your leisure. It’s worked really well for me and the fees are very reasonable.
[1] https://wise.com/