My house is always a mess. Not like filthy and dirty but untidy and cluttered. It doesn’t feel very homely either.
Has anybody been like this and changed? Please tell me how?
I dread anybody coming to my house, my children don’t have people over.
I need to ruthlessly declutter I think but no idea where to start whenever I do I just seem to create new piles somewhere else.
I think you took a very important first step in recognizing that you don't like the current state of things, that's a hard thing to admit!
You could try to determine first whether you are dealing with a lack of storage for your things or whether there's generally a problem of not throwing away stuff you and your family truly no longer need. Lack of closed storage can make a home feel more cluttered than it really is, because everything is always visible.
And from there, I think the best option is to just start somewhere, and with a set goal. E.g. start with the kitchen and your goal might be to throw away/donate unused items from your cupboards, sort out ratty dishrags and check for any expired food items. That, at least for me, would make me more motivated than aiming to declutter the entire house in one go, because it's way too much.
There are also many Youtube videos on decluttering and also deep cleaning - I like Aurikatariina. Her focus is on truly filthy homes with years of neglect, they always motivate me to clean. Maybe you can find something you like that gets you in the mood.
Good luck! I'm sure you can get your home in a way you enjoy and your kids will also appreciate it (while making messes of course,e they're kids...)