Energy

First of all, in case you're worried about this: working out is great for health, but not strictly necessary for weight loss.

Also: you can increase your activity level without necessarily working out. You might want to check out this thread:
https://community.myfitnesspal.com/en/discussion/10610953/neat-improvement-strategies-to-improve-weight-loss/p1

I agree that exercise is optional for weight loss, but good for health, can be fun (keep looking until you find the fun thing), and absolutely needn't be exhausting or miserable in order to be beneficial.

In reality, exhausting, miserable exercise is not even technically the best way to build fitness. What is? Starting with something manageable, but a tiny bit of a challenge. Then, as one gets fitter, one can increase intensity, frequency, duration, or type of exercise gradually, to keep a manageable challenge in the picture. It's challenging current capabilities that builds fitness: Overdoing for current fitness level just wears a person out, risks injuries, is discouraging, can lead to a bad relationship with being active, even giving up.

That said, I have a question that I didn't see asked: Is your current energy level fine, normal for you, but you just can't muster the energy to exercise? Or, are you feeling like your energy level is slipping below normal?

If it's the latter, consider whether losing weight a little more slowly might serve you better. Too-aggressive can be counter-productive for both weight loss and health. On the weight loss front, underfueling leads to fatigue, which reduces activity (maybe even unnoticed spontaneous energy, like fidgeting). That won't stop weight loss entirely, but it can mean that a person will lose more slowly on X calorie level than they expected, and feel bad alongside: Not helpful. It can lead to compensatory binges, or even giving up entirely because the process is too hard.

Sometimes, slow loss actually gets a person to goal weight sooner than fast loss . . . if that fast loss has breaks, interruptions, eat-backs, etc. It's hard to think about that when starting out, feeling gung-ho and motivated, but it's a fact. Losing any meaningful total amount of weight is going to takes many weeks, probably months, for some, years. A process that's sustainable for that long term is a better plan.

Many of us around here think that it's a good idea, if not under close medical supervision for adequate nutrition/fueling, to lose no more than 0.5-1% of current weight per week, i.e. half to one pound per 100 pounds of current weight (same idea if you use kg). There's a bias toward the lower end of that range,, especially for people who have less than 50ish pounds to lose, have more sources of stress in their life besides the food restriction, have some concurrent health condition, etc.

If it's that you don't feel like you want to exercise, but your energy feels normal, and you're not losing too fast . . . it's OK not to exercise. You may lose a little more muscle tissue while losing fat by doing it that way, but probably not dramatic as long as you're losing at a reasonable pace and getting good nutrition.

Wishing you success!