Yes. First cut out processed food. And takeaways.
After that it’s all about eating habits. One slice of bread won’t make a huge difference to your weight - but if having bread in the house means a fridge and cupboards full of butter, cheese, jam, marmalade, honey, chocolate spread, peanut butter, - then you’re making your life harder. So cut out bread. And all the things that go with it.
And meat. Because planning meals around meat just encourages carbohydrate consumption.
Give up alcohol completely - tell yourself it’s for Lent. It’s not just the sugar - the alcohol increases appetite while at the same time decreasing the ability to make sensible decisions about huge tubs of crisps.
Also forget the existence of all fizzy drinks and all shop bought juices, smoothies, whatever. Replace with the best peppermint tea you can find and rink it all day. (No need to deprive yourself of your morning coffee!)
Do you have a regular veg box delivery? Do this if feasible, otherwise ‘manually’ increase your vegetable intake by a lot.
Pulses and beans won’t actually decrease your weight - but they require a change in cooking habits and fill you up.
Have nothing but EV olive oil in the house. No butter, margarine, other oils.
That all looks a bit scattered. But it really is about completely changing your habits for good - not ‘going on a diet’.