Getting started with just challenges!

Hi!

I really haven't worked out at all in nearly a year, so I am curious about something.
I cannot get myself to go to the gym, but I can get myself to work out at home.
For the last two days I have been doing challenges, and I'll tell you. I am very sore.

Squat challenge
Wallsit challenge
Plank challenge

I also do various other exercises, like scissorcrunches, the one were you lift your legs and it works your lower abs, a one legged bridge where you lift one leg up and down without it touching ground, jumping jacks and sumo squats.
FYI, I am very sore! My back, butt and legs hurt like crazy. It's hard walking properly lol

I have also tried being more healthy.
I really only drink water and some juice, and I try to eat less calories. And I try not to eat after 8.
Any tips on this would be greatly appreciated

My question is, is this enough for now, or do I have to do other things as well? I'd really love to lose some weight for new years.