I've had the Bumble app for seven months, but haven't done any messaging on it for more than a month since I was dating someone for a while and they left for the Masters studies in Berlin, started swiping again and didn't find anything that caught my eye so I've barely been on it for the past two weeks. For the first three weeks I was on the app, I dated about 3 people a week and spoke to 5 people at a time for the post part (was very new to I've only been in one long-term relationship which ended almost a year ago). Although I went on a lot of one-off dates for those three weeks, I really liked the first person I went out with so we dated for about a month (ended because although the person was attractive, funny, interesting and lovely-I was slightly nervous around him since he was my first and was also 9 years older than me so while he got along there weren't chemistry sparks-we're still friends though).
After the first three weeks, the novelty of online dating wore off a bit and I didn't pressure myself to date or message multiple people. As for why people don't message after matching; you don't just wipe right on one person and expect to match. You swipe right on a few, hope to get some matches and trying to hold engaged conversations with multiple people is tiring. I had an unpleasant experience once (mostly cause by me), where the other person starting talking about a relationship and other intense things before even meeting up, a part of me though was not physically attracted to this person (was also living in Geelong and didn't seem to do anything else in life apart from Med school) so I got nervous and kinda flaked on the spot. From that experience, I've learnt to be ok with trusting my instincts (even if they aren't rational) and feeling the vibe with people. I only went out with people who I was very physically attracted to, gave a charismatic vibe, seemed interesting and make me feel excited to be going for a date. I went out with four people (one at a time), where the dating arrangement lasted from 3 weeks to 2 months. I really like all of them. Two of them moved overseas (one was a Brit backpacker) and another who I saw relationship potential (he later told me he saw it as well) with ended things because of personal circumstances. Having dated five really great people for a reasonable duration and pretty much soon after each other, I think my luck with Bumble has ran out.
Soon after the last person I've dated left (I got a new phone with more storage space), I downloaded Tinder, Coffee Meets Bagel and Okcupid. I deleted Tinder (photo and profile quality weren't great) and CMB (did not like my suggested matches and I can't preemptively like matches without paying) after two weeks. The profiles of OKC are of a higher quality than the other apps and there are many nerds, artsy/left of field people on it but I've been inundated with plenty of basic and objectifying (which made me feel self-conscious) messages as well as many others from people who I didn't find attractive or who were in their mid-late 30s. You can message people on OKC before matching. Having been using OKC, I now appreciate the initiative I was forced to take of Bumble, where I tend to put more effort into convos since I started it.
I haven't dated anyone (by choice) on a non-Bumble app and am one foot in and one foot out of dating apps but I recently saw a profile that gave me a vibe/spark so I'll probably try pre-emptive match messaging.