Study and practice, which is important? Why?

I hope someone can help me polish the following sentence from grammar and profession. Thanks 『I come from Fuyang Anhui provience and I was born in the countryside .Actually, there are no famous tourist attractions. So,I want to talk about the changes of my home village. When I was very young, the road in the village was dirt and narrow ,the house was small and low .Since there were no street lights, the whole village was in darkness at night .However, recent years, great changes have taken place in my home village, every family has built their own new house which is high and spacious, the goverment has built a concrete road and installed street lights for my home village ,Now ,my village looks neat and bright at night.I feel very happy and proud to witness these changes.』

Finally , what I want to say is that my data sensitivity is not because I am talent ,but because I like to work with data ,I am willing to be faithful to data ,and be able to check data repeatedly in various ways. I wonder if there are any grammatical problems in above sentence . Thank you.

Hi , I need a friend who are good at oral English and I can help him or her in studying Chinese

Would you like to let me take you to the Great Wall when you attend the next year's program in China ? I wonder if there are any grammatical problems in the above sentence and。Thank you.

With the rapid urbanization process, there is an increasing number of environmental issues come behind . I want to know if there is any grammatical problems in above sentence。Thank you.

Dear Bob,    I am quite delighted to recall the past days when I travelled in Canada and stayed in your house . I am writing this letter for the purpose of providing you with several practical suggestions regarding how to protect you from being infected by pandemic . The relevant details are as follows. To begin with , you should guarantee a minimum of 30 minutes moderate-intensity physical activity during your daily life so you can keep a healthy body . In addition , you must put masks when you prepare to go out as it can effectively safeguard you in public occasions. Finally ,it is a good choice to maintain a proper social distance . Take care of yourself and give my best regards to your family.     Yours sincerely, I want to know if there is any grammatical problems in above letter .Thank you.

This ability is not only remarkably conducive to paving the way for a person's further development , but also at the very essence of establishing a strong and rich country. I want to know if the above sentence has any grammatical problems.Thank you.