Best at-home workouts for resistance training?

Hi! I’m a super beginner to working out (about all I do right now is walking on incline & similar low intensity cardio), and I’ve lost a fair bit of muscle because of weight loss over the last half year. I’d like to incorporate strength training to get some of it back, but I’m honestly not sure where to begin at all—does anyone have any guides or pointers? Thank you!

My apartment has a fairly decent home gym so I have access to dumbbells, kettlebells, resistance bands, and a small variety of weight machines.