Your sentences are clear and definitely get across your ideas. I would reword them slightly to something like this: Well, I wish our neighborhood had a park with tall trees so locals could stroll in the shade in their free time. In addition, I think there should been bike lanes for cycling in the neighborhood as they can potentially reduce the traffic congestion in the area. The word "locals" seems slightly strange since I assume you are one of the locals (you say our neighborhood). Since you use the word locals, it's like you aren't included in the group. So you could just say we, as in "...with tall trees so we can stroll...

Well, I wish our neighborhood had a park with tall trees, to walk in. Also, I think there should be some bike lanes for cycling in the neighborhood, to reduce traffic. this is more the way people speak informally. I assume this is supposed to be informal, since it begins with "Well" which is only done when speaking, not when writing. Speaking has a bit of a rhythm. so the way most people would speak, they would get their idea across without many extra words, and then the next sentence would be usually a similar pattern. So first: I wish there was a park. Then, a pause, as if to clarify the purpose: the purpose is to walk in it. Next, I wish there were bike lanes for cycling. Then a pause, to think of the purpose again: the purpose is to reduce traffic. Keep it short, avoid synonyms like stroll and congestion, people when they speak use simpler words. If the sentence is to show your WRITING style, it is fine as is (other than the "should've been" should be "should be."). But if the sentence is to show a natural SPEAKING style, then it should be kept simple and have rhythmical patterns that show the way someone's ideas are popping into their head.

Hi I'm making some corrections. Well, I wish my neighborhood had a park with tall trees in which the locals could stroll in their free time. Moreover ,there should be some bike lanes for cycling in the neighborhood. So, it will potentially reduce the traffic congestion in the area.

The use of "there should've been" instead of "should be" implies that the park no longer exists.

Hi Mona. The sentence is natural.sounds great. 👍