Get a Discord going with your users. Advertise it in your app. If you are building something valuable, they will join and encourage you. That's what I've done a

Get a Discord going with your users. Advertise it in your app. If you are building something valuable, they will join and encourage you. That's what I've done and it's a lot less lonely now with hundreds of people tuning in and discussing things (my work) daily. If they don't show up, then you probably are not shipping early enough and valuably enough to keep this going. Or you need to learn more modern marketing strategies for unfunded solo builders. Or you are building something valuable that your users have no passion for, which will be hard for yourself to grow sustainable passion.