Basically, you’ve lumbered yourself with excessive borrowing and now the inflation rate has gone up.
It won’t stay this high, I don’t think.
What about the car loan? Are the payments large? And how much longer is the loan? I recently bought a cheap, reliable second hand car because I’ve been stung with a car loan before. They really do suck in a lot of money.
Ultimately, this situation is temporary. When I bought a house a couple of years back, what struck me was that this was going to be the worst time. In general terms, payments on a mortgage stay the same over the whole term (barring interest blips) so over time, you in ten years, you will be making the same payment per month, whereas those paying rent will be paying way more. In the meantime, your wage will have risen, at least in line with inflation and likely your house will be worth more, so your mortgage is much smaller than it would be if you bought your house over again.
Tighten your belt. Take on the lodger, if you really think you’re at risk of losing your home (your reaction to that suggestion indicates you’re not really at risk at all). It’s not much fun right now, but for you, this is the worst it’s going to be and it will improve. For a family in a rented home, not so much.