Tips to start walking/ running?

Helloo,

So I know for a fact that walking everyday, even if it's just for a bit will help me feel SO much better.

Considering that I have considerable amount of free time now, I want to get to it. I want to walk, but for some reason I'm hella conscious lol, it sounds wild but I feel like I'm not doing it right (?)

I found a park that's like 1km away from my home and I can just walk it there and walk around the park but for some reason I have so many doubts?

What if 1km is too much and I get tired? What if other people notice me walking lmfaooo, what if I'm not walking right😭😭

Please I'm just v conscious but I know I need to start and I'd love some tips