People who don't need mobility aids actually feel good after walking! They find using a mobility aid to be cumbersome and a barrier for their access! I know because this used to be me.
If you're unsure, stop thinking of your default state of being as walking with 0 mobility aids. If you had a cane/wheelchair/walker/etc, would it help you? If it would, it's worth it.
Also consider: mobility aid lending libraries or rental services to try them out and figure out which one works for you.
Your body can change and that's okay. You are not a moral failure for benefitting from help. You don't even need to need it! If it helps you, that's enough.
I'm speaking as someone who has used a rollator