Hi Owen,
Try catching these women when they are actually online.
On average, women get a lot more messages on dating apps than men do. Oftentimes, they are simply overwhelmed and find themselves unable to reply to all their messages. It becomes like a job to them.
You have a better chance at getting responses to your messages if you catch them when they are actively using the dating app.
Dating apps are most active in the evening hours between 6pm and 10pm.
You should also be aware of the best days to send your messages.
Dating apps are most active on the weekends, with the highest spikes on Sundays.
Try sending your messages on these days and times and you should start getting more responses from women.
As far as your conversations, to make them last longer than a couple of message exchanges, use humor.
Women love to laugh.
Laughter releases endorphins in the brain. Endorphins are peptides that connect with opioid receptors in the brain causing the release of pleasure hormones. In other words, endorphins released in the brain makes people feel good.
If you make her laugh and laugh often, you make her feel good, which in turn gets her excited to keep reading and responding to your messages.