Foam rolling, hot bath, and stretching. It’s all super important!
And rest. You’ll get better if you rest, and then you’ll be less and less sore as time goes on.
If you don’t have a foam roller, you can use a rolling pin (particularly for the thighs lol) but also, maybe a partner would be willing to give you a nice butt massage 😉 haha
I also like to have very cold showers for muscle soreness, but I know they aren’t for everyone. Basically, I have my shower at like “casually cool” to start, and get used to it… turn it down a bit, get used to it… repeat, till you can’t get used to it anymore, and stay for as long as you can! And then you’re done lol. I find it helps, and is quite, ah, invigorating 😉
Hope this helps!