Hey @Mistyskypercy, great that you've found some support on MumsNet at least - lots of people know what you're going through and believe you can get support! I hope that give you some confidence that things will get better? Because they WILL - the shock of diagnosis and the struggle to work out how to go forward is definitely the worst part.
I think it would definitely be worth joining FB for the POPS groups, they are very useful places to find a tribe who will support you.
Pelvic floor exercises, with or without the device, have really helped me. At the end of the day if you lifted weights with your arms consistently you wouldn't have any doubt that you'd get stronger biceps, right? And the same is true of good kegels - they just help things feel stronger and less loose down there; it's just a question of doing them consistently, and for me the fun phone games help with motivation and daily goals.
It's a shame you haven't tried the pessaries you were given - they are medical devices and I truly believe that there's no risk of them worsening your situation - they might really help. Why not try the smallest one today? If you can find one that fits you well it might hold things in place so you can empty your bowels much more easily, and maybe even feel confident to go for some walks? I have a friend who has a ring pessary that she can keep in for sex and she really loves it, so if you don't get on with the cubes then it might be an idea to ask your GP about one of those instead...
In terms of surgery, what I was told (by a really good surgeon who I found excellent to talk to, a great listener etc) is that the average prolapse repair surgery has a 'lifespan' of 15-17 years. Very few last longer than that. When they 'fail' that can look worse than the pre-surgery state - a small % of women will become totally incontinent at that point. Most surgeries can be repeated, but not all can - it depends on the strength and health of surrounding tissues etc. I was 37 at the time of that discussion and he basically said if you can possibly delay surgery until your 60s, that's what he'd recommend! He personally never operates on women with kids younger than 6, because of what @Jaffacake76 said - you can't stick to the recovery rules on 'no lifting' if you have small kids, and that means it will 'fail' way sooner than the average...
Now, obviously some women have great surgery outcomes and total power to them! But for myself I'm keen to stay away from surgery as long as I can and manage this with non-surgical options - which looks like pelvic floor strength work for now, and then I'd consider a ring pessary if things got worse, which I think they do for some women during menopause.
It's great that your mental health is holding up well apart from this. Really wish you all the best and hope you'll feel more and more confident to get the right help for you. x