Please help me to correct my English grammar. thank you.

June 17, 2014

Dear sir,

Good day, I regret when I resigned from your company but it’s my family’s reason. I am now presently working here in Maldives as a professional photographer and salesman as well. I realized that you have the best company I had ever worked and having a good manager like you understanding always in every situation to all your staff.
I would like to apply again in your company if I still have an opportunity to work with your organization. If I’ll be given a chance to join in your company then I can fly direct to Doha Qatar anytime next month as long as I have a job offer from your company and hopefully you will give me a second chance to work with your company and it would be a great gratitude to you in my whole life.

Thank you very much for your kind always and looking forward to receiving a reply from you.

Thank you.

Respectfully yours,

Paul

I regret that I resigned from your company, but I had to do so for family reasons. I am presently working here in Maldives as a professional photographer and salesman, but I believe yours is the best company I have ever worked for. Good managers like you, who is very understanding for all your staff, are hard to find.

I wish to apply to work for your company again if I still have an opportunity to do so. I can fly directly to Doha Qatar anytime next month if I have a job offer from your company. I hope you will give me a second chance to work for you. I would be very grateful.

Thank you very much for your kindness. I look forward to receiving a reply from you.

Respectfully yours,

Dear Sir,

I hope this letter finds you well. I am writing to express my regret for resigning from your company in the past. The decision to leave was driven by personal reasons related to my family. I have since found employment here in Maldives, where I work as a professional photographer and salesman.

However, upon reflection, I have come to realize that your company is the best I have ever worked for. I particularly appreciated having a manager like you who is always understanding in every situation and shows support to all the staff members.

With this in mind, I would like to seize the opportunity to reapply for a position within your company if it is still available. If given the chance, I am willing to fly to Doha, Qatar, at any time next month as long as I receive a job offer from your organization. I genuinely hope that you will consider giving me a second chance to work with your company. It would be an immense honor and I would be forever grateful.

Thank you very much for your continued kindness, and I eagerly await your response.

Thank you.

Respectfully yours,

Paul

To correct your English grammar in your letter, here are some suggestions:

1. In the opening sentence, you can say "I regret resigning" instead of "I regret when I resigned."

2. Change "realized that you have the best company I had ever worked" to "realized that your company is the best I have ever worked for."

3. Instead of saying "having a good manager like you understanding always in every situation to all your staff," you can say "having a good manager like you who is always understanding in every situation with all your staff members."

4. Change "I would like to apply again in your company" to "I would like to reapply for a position within your company."

5. Instead of "If I’ll be given a chance to join in your company," you can say "If given the chance."

6. Change "and hopefully you will give me a second chance to work with your company" to "and I genuinely hope that you will consider giving me a second chance to work with your company."

7. Replace "and it would be a great gratitude to you in my whole life" with "and I would be forever grateful."

These are just a few suggestions to improve the grammar and clarity of your letter. Remember to proofread it carefully before sending.

I hope this helps!