Do I really need an advisor who is a fiduciary?

That depends on how much responsibility you want to retain for verifying recommendations and how easily you achieve peace of mind. An advisor who will contract with you in writing that work for you will be completed as a fiduciary must always put your interests first and with full disclosure.

An advisor who does not confirm a fiduciary duty probably has compensation sources in addition to what you are paying in fees. When that happens, the advisor is actually an agent of the other party and cannot be a fiduciary with you.

That means you may get suitable recommendations, but those are not necessarily the best recommendations that the advisor could make for your situation.