Looking for some guidance on getting into peptides...

I'm a 43 year old father who fell off pretty bad over the years and looking towards peptides as a way to help me get back on track, but the scene is overwhelming for an outsider.

Mainly looking for recommendations that can help with weight loss, muscle growth and recovery (I also have a herniated disc that offers me an additional hurdle. Usually live with some amount of pain/inflammation)

Stacks would be optimal for convenience/economy.