Best advice I can give is to use myfitnesspal - if you’re not familiar it’s a free app (there’s a paid version but the benefits really don’t justify the cost - the free version has all you need) that takes your weight and weight loss goals and gives you a calorie budget - but also it has a great feature, that almost anything you could possibly buy is on their database and loggable by scanning the barcode. If there isn’t a barcode, the database is searchable too.
It gets a bit tricky (i.e. guesswork) when you decide to use the local takeaway that isn’t part of a major franchise, but otherwise it’s ridiculously easy to keep track.
I managed to lose around 2 stone last summer and then 2 stone again since new year (I put on about a stone in the middle) and both times myfitnesspal was absolutely crucial - more so than the Huel (I used Huel in the summer but haven’t done really since new year)
Sorry if it sounds a bit like I’m on commission - to be honest myfitnesspal itself isn’t the only option, there are plenty of other calorie counting apps out there which also have great databases. The important thing isn’t which app you use, but that it gives you a better idea of what you’re eating, especially if you log stuff honestly when you have the odd off-day.
And just for context - last May I was around 121 kg, and now I’m about 103 - getting sub-100 is my main landmark at the moment