energy levels

Does anyone know the best peptide/sarm for women that will give weight loss, help build muscle and give energy.. age 44 weight 270 height 5”4

what are the tips and secrets that you guys and gals have to offer when it comes to getting more energy out of my day through my diet I seem to get tired around 2 in the afternoon. I then have to work out at 5 and my energy levels are down. Do you think this is Diet related and I should change...