Help me out with my wardrobe - I despair!

I recently saw some photos of myself at an event and I know they say the camera adds 10lbs, and I've never photographed well, but can the camera add 30lbs? :-(

Perimenopause is wreaking havoc and I'm trying to wrestle back some control. I've accepted weight loss during this phase is difficult, and my life is overly full of "stuff" so I'm trying not to get too hung up on it. But I need to figure out some more clothing options and don't have a lot of cash for trial and error (I also live rurally so there aren't a lot of in-person options).

I'm very much a 90s girl; leather and denim jackets, 3/4 length coats, jeans and tshirts. But jeans... nothing fits any more! So I live in leggings, but I need something that covers my butt so I don't worry about transparent legging issues. I've always worn vests and my shoulders were one of my best features, but now my arms are pudgy and... well it's awful. I'm also too hot most of the time and that's before summer has even arrived.

For the record I'm really hoping to get back to the gym, but I could do with some options in the meantime. Any good online sources for tunics with a waist (or belt)? Do jeggings still exist (and actually look decent)? I loved those wide boho belts and wish I'd kept mine (though they probably wouldn't fit now).

My proportions are still there - I've always been somewhat hourglass-shaped - but everything is just bigger now, and curvier. I certainly don't need to accentuate anything lol (I wish most of it would go away).

Any tips? Where do I start? Any fashion words I should look up? I'm not remotely fashion-conscious, I've always just worn what I liked, but I no longer know what I like, or where to look.

I'm in Canada btw.