I think that's fine. Some people come up with fun labels to explain what they're looking for. Many years ago, someone told me he was "butchsexual": he wasn't picky about man or woman, cis or trans, but was primarily looking for butch energy (whatever that meant to him).
I think the rough part tends to come not in the announcement of the search but in the rejection—so, when someone rejects someone else, if they can be vague and polite about it, that kindness goes a long way.
For example, some people may feel they're presenting as male — if they're trans, they may be working hard at their presentation, and if they're cis, they may believe they don't have to work at it at all because their maleness is supposed to reveal itself naturally — but for whatever reason, their male vibe may not register on your end. Doesn't mean they aren't actively presenting as male nor that their maleness is inauthentic, only that you're not feeling the chemistry and aren't interested in pursuing that relationship. You aren't required to be attracted to everyone who meets your basic sex/gender specification. And you mostly can't control whether you perceive someone as male or female, at least at first glance (though you can make a conscious effort to gender them correctly once you've been introduced). If you're not romantically interested, you probably don't have to explain it to them nor to yourself. There might be other subconscious reasons why you're not into him (like, the guy is "too young" or "too old" regardless of his gender flavor), and it may be valuable to privately unpack them for your own self-knowledge, but feeling guilty or weird about it doesn't do much.
Sieran Lane has a good article here:
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