I feel for you OP, toddlers are hard work. There's many ideas to try on the thread, but I'm sure you'll find your own ways too, and be back in years to come to share them.
At every childhood stage you are finding and adapting ways to parent new challenges and lots is trial and error. It's a case of finding out what works with your DD.
With mine, DD1 had her nappy changed stood up on a window sill - so no escape - from 9 or 10 months. She was wriggler and a climber. The window was not overlooked, but getting her to look at the pigeons etc helped distract her.
DD2 on the other hand needed control, so two choices for lots of things, like dressing etc. With DD1 I'd pretend she needed to put her head in the lions mouth (through the head of her T-shirt) and she loved it!
She also liked it if I laid out a "clothes lady" on the floor of what she was wearing for the day. Then we'd race to get the clothes onto her.
DD2 occasionally hated the car seat. That was solved with a tickle if she went rigid, and a bit of pinning down. It's non negotiable and she soon got bored of playing up when she learnt there was no option.
With the stroller, I'd tickle or pin her in with a knee, do the straps double quick and placate with a toy.
The phrase pick your battles- yep, that was definitely DD2 as a toddler.
Now they're both teens it has swapped and I have to pick my battles with DD1!