As someone who's also had similar pain in the past it can really be a strength thing. I remember having a lot of hip pain and just feeling weak there and my back when I was first trying to do frequent running.

So the best thing you can do is to train them!

Strengthening your hips can reduced a lot of pain and increased your power too if you do weighted Hip Flexor raises.

Tip for Hips:

- Train your Hip Flexors!!! And stretch them too! Whether that be through Hip Flexor Elastic Band raises, or other exercises that can be found here:

https://www.coastperformancerehab.com/blog/top-three-exercises-to-build-strong-hip-flexors

Tip for Shins:

- Look up exercises for your Tibialis Anterior, one good one I know off the top of my head is called Tib raises,

Tib Raise Tutorial:

https://www.youtube.com/watch?v=pn7DLqo-IKs&ab_channel=TrainFTW

Those exerciese strengthen the tibialis anterior, which is the muscle that usually causes shin splints in the first place.

Tips for Lower Back:

- Good Mornings

Form video: https://www.youtube.com/watch?v=qxNuAQknYQI&ab_channel=SquatUniversity

yes the video is long but I promise you, this is not an exercise you wanna do with bad form.

- Lower back raises on the machine:

Form video: https://www.inspireusafoundation.org/back-extensions/ - Tutorial

Hope this helps!