If you're alone, plugging away at a keyboard with no one to share your concepts with, you've got an infrastructure problem.
Here's the great news, infrastructure problems CAN be solved!
Fading are the days where email lists matter, and the growth of a community will far outweigh than another spam message in someone's inbox. I've seen games on Steam that are polished gems, go on the wayside because someone believed "If I build it, they will come". You have to rely on more than just wishlists and vibes. There is hope though.
Let's get into it:
Build your landing: This could be a simple Discord Server. It's well known (and sometimes well hated) but widely used for now. Your opinions aside, people ARE there.
Get your "First 5": This can be your irl friends, if you're blessed to have any. However, assuming you don't, find people in your field. These should be the people on the same path as you. You're reading this, so you're well on your way. Just read someone else's posts, send them a DM if you think you could grab a beer with them. That's it, kids on a playground do this just as easily. Don't overthink it.
Co-Improve your landing: Have a community discord bot that each member works on, kit that out with some cool features. Make a website with the boys/gals. Make your space not just useful, but interesting! Add a Minecraft server for easy engagement. (It's silly but works wonders for member stickiness).
Work on your funnel: Now that you've got a group of 5-ish people working on things, congratulations you've got 5x the footprint to get some traffic to your chill pad. Market it however you want, there's a thousand "Join me and my group of highly motivated people" groups that charge a $100+ monthly fee. And there will be thousands more! Or if you and your 5 are working on a joint project because you found great chemistry, just build with an audience and funnel people to watch.
Engage in the grind-set: Now that you have the attention of a group of people you can perform the Neo-Dev-Cycle of "MARKET, SELL, BUILD".
You don't need a massive audience. You don't need a viral moment. You need five people who give a damn, a shared space to build in, and the discipline to keep showing up. That's the whole plan. Infrastructure first — everything else follows.
If you feel like you need it, here's your formal invitation to DM me. If you're building cool things, and are willing to see my cool things, that's all we need to be friends.