Where did you get all these ideas from
I think the thing about any way of eating is we all have different preferences and need to include in what we like, and minimise or side step the foods we don't like. Since I got to my preferred weight, I have increased the amount of fat I eat, as part of my maintenance regime, but it's still not very much by comparison to some others I read.
I would suggest you compile a list of all the low carb foods you like, then a list of carby stuff you like, then try to find alternatives. As many folks have said, cauliflower or celeriac makes an acceptable substitute for mashed potato. It's not
exactly like it, but many learn to prefer those tastes.
For the list above, I might be inclined to use something like Excel, so that I could move foods and alternatives around the page.
If you can cook, or are willing to learn, then Googling things like "low carb Cheesecake" or the like will throw up loads of potentially delicious alternatives. There's also several threads on this site which include what others eat, and recipes. you need to spend a little time getting your act together, then just set to it.
Many people find losing weight much simpler than they previously experienced, just by reducing carbs.
Good luck with it all.