And that's the real answer I would give to this question, too. The conf is a reason to go but the function of tech confs is to be a catalyst for meeting people.
In my experience those who get the least out of conferences are the groups of two to ten colleagues that just go to a few talks and otherwise hang around always in their own group, possibly even in a language different from the event's.
Instead I recommend the same advice I found helpful when I went to my first tech event: try to talk to at least one new person during each break, leave room for at least one extra person when standing in a group, always talk English (or whatever the event's main language is) even when the other person speaks your native language (if you're a non-native speaker) and if the sessions are recorded, prioritize talking with people over attending the talks.
And of course, cheesy as it may feel, bring business cards and exchange them liberally, even if it's just an easy way to look up the other person's name without having to stare at their chest to read the badge. If they didn't bring any, this also gives you an excuse to stare at their badge to "make sure you get the spelling right" as you write their name and contact details (GitHub, Twitter, e-mail, website, whatever) down. And yes, introducing yourself will feel increasingly rehearsed over time but that's because you're literally practicing it. It's a good skill to build either way.
The most fruitful conference I ever attended had amazing talks but I didn't attend more than a handful of them because I spent the entire time talking to other attendees, speakers and vendors. It's a bad time to ask your tech support questions (except as an opener if they're the kind of person that enjoys that and the problem is sufficiently interesting) but it's a great way to meet people, even if the benefits may not be immediately obvious until you run into each other again (e.g. I met one guy from Facebook early into his career and after running into each other for several years in a row he heavily tried to recruit me because he had changed into management by that point -- which I declined on ethical grounds, but still). It's an easy "in" even with bigger companies, especially if you wouldn't normally have access to those people.
Oh, and of course it's also an easy way to talk to other people in your field and find out both about the cool things other people are doing and also about how everyone else seems to run into similar problems as you and you're not actually that incompetent after all, because the boring problems are legitimately difficult to solve.
In summary, this is why "remote conferences" do nothing for me and largely seem to just be a way to charge people for video access that used to be free pre-pandemic.