When I was 17 and trying to figure out what the heck my sexuality was, the main, if not only, piece of advice I found online, even when I directly asked people, was to go out and experiment sexually with various people and see what gender I enjoyed sex with most. And years later, that still seems to be the advice most of us give when someone is trying to figure out their sexuality. And there's nothing wrong with doing that, and if that's what helped you, great. But I do think there's issues with this being the most prevalent advice.
There are a lot of reasons someone may not want to do this, various personal or religious reasons, comfort levels, a lack of interest in sex, not experiencing much or any sexual attraction, or simply being too young for this to be applicable.
I found the advice unhelpful for many of the reasons I just mentioned, and it left me feeling lost on how I was supposed to find out what my orientation was. It also left me with thoughts like how can I be a part of queer culture if I don't want to experiment sexually or be sexually active? Even looking at articles with advice on dating as a queer woman I saw bullet points like "It's okay to have sex on the first date!" there was so much emphasis on how it's okay to have very active sex lives that it left me feeling like if I didn't want that, I'd never be able to have relationships because there'd be an expectation of sex right off the bat. Don't get me wrong, sex positivity is important and we shouldn't shame people for their sex lives. But I feel like we don't don't talk about not being into that kind of thing enough.
I also didn't know at the time that I was asexual, and while I'm sex neutral and open to the idea of sex with a trusted partner, I don't have any desire to seek out sexual relationships. Not experiencing sexual attraction made figuring out my attraction a thousand times harder. I still don't know if I'm bi/pan or lesbian. I do refer to myself as gay or lesbian in some instances, but sometimes I say queer or just shrug and say "I like girls" or "I'm not straight" and some days I'm okay with the vagueness of that, but other days I feel the stress and pressure of having to pick an identity in order to have a community to belong to and be accepted. That stress and pressure doesn't get better when all the advice I can find on the subject just tells me to have sex and that'll clear everything up.
We put a lot of focus on finding out exactly "what" you are. And I don't think sex is the best way to do that. Lots of people have varying interest in sexual or physical intimacy, not just queers. My cishet friend told me she got a boyfriend but she wasn't entirely sure if what she was feeling was romantic, and that the idea of kissing made her uncomfortable. She doesn't identify as ace or aro, and she shouldn't have to. People can have a lack of interest in these things without a lack of attraction.
Another issue with this advice is that sexual and romantic attraction doesn't always line up for everyone. You may enjoy sex with all genders, but find you only have a desire to date one. So sexual experimenting wouldn't necessarily answer the question for you. Orientation is really complicated. I did mostly consider myself lesbian, but I occasionally find men aesthetically attractive, and I'm honestly starting to wonder if I'm actually bi but still feel uncomfortable using the term.
All this needlessly long and ramble-y text to say, this advice is simply useless to a lot of people. And while I can't speak personally for this part, I'd bet at least some people who enjoy sexual experimentation still weren't sure of their orientation at the end of it. This advice shouldn't be presented as the one size fits all solution.
If you're uncomfortable or uninterested in figuring out your identity this way, there's nothing wrong with that. There's also nothing wrong with not knowing. You don't have to know right now, or ever if you'd prefer that. It's okay to use vague terms. It's also okay to use whatever label feels closest even if it's not perfect. And remember, you're not locked into anything. You can always change labels.
There is no right way to determine your orientation. Everyone discovers themself in different ways and at different ages. It's not a race or a checklist. The most important thing is to be kind and patient with yourself and whatever you do to figure yourself out, be safe.
