Yes more info will help. Some shops will let you try different saddles for a few days. For me, I like Specialized Toupe 143 saddles. I tried a couple others, I know not to ever ride a Fizik saddle now - but that’s me, they can work for others.
Wear shorts with a good pad, but they have to fit well too, which could be a problem creating movement and friction. Have you had a bike fit? This can help as well. At the first sign of a saddle sore I start treating it with an anti-acne cream. When not on the bike wear underwear that wicks moisture.
Also so keep in mind things will change as you lose weight. Mostly for the better of course, but you may have to revisit all of this a couple times along the way. And some of this may be just your body needing to acclimate. Good luck.