Replying to Photo gear backpack recommendations

I’m taking a trip to Europe next year and was hoping to get some advice on a solid backpack to bring my camera (d7100 if it matters) without worrying about other bulky bags.

I really only need the “photo” aspect of it to safely carry one body and one lens, but I’d like to do it without an additional camera bag. I’d like to be able to use it for other travel gear (clothes, etc), but want my gear to be safe

Right now I have a dakine heli pro pack from 10 years ago that’s held up super well.

I’m looking to spend around $100, but would listen to any recommendations.

Thanks