I am totally agree with the answer of Okuthe P Kogeda and Muhammad Ali

DR JANA!! Writing for academic journals is a highly competitive activity, and it's ... on a wide range of topics, from the fundamentals of publishing to broader issues like ... who represented renewed and ISI-indexed Elsevier journals, argued that the ... A good cover letter first outlines the main theme of the paper; second, ...

https://www.elsevier.com/connect/7-steps-to-publishing-in-a-scientific-journal

http://www.stu-library.org/uploads/1/1/0/5/110551273/how-to-write-jp.pdf

Regards--

Susovan Jana , in addition to what Ijaz Durrani has given, you will need to something that is novel, innovative and offers practical solution to an existing problem. This means you have to be familiar with literature in order to contribute. All the best

It is based on the maturity and importance of the manuscript & research. Also good presentation (well-written) + good contribution with significant novelty or originality of the manuscript.

Dear Susovan Jana,

I think the key ingredients are as follows:

1- Novelty of the topic

2- High-quality text, especially the abstract and conclusion parts

3- Usually, the results should cover all aspects of the research

4- Application of the research topic

5- Continuity of the different parts of the paper

Regards

Based on literature survey, one should find out the inherent problem of any research topic. In my opinion, finding a genuine problem of existing research is the most important step for publishing any journal.

Dear Susovan Jana , to be published in a well-indexed journal the research should be pretty specific aimed to solve a certain problem. I agree with other researchers' answers.. Also, it is good to highlight and reference Your previous researches related to the problem.

If your research is related to Machine learning and Computer Vision consider describing the dataset, methods used, their key distinction, so that it will be clear what the research is about. You may also want to explain why you decided to use x1 instead of x2 as a certain feature or parameter. So, that's important.

you will need to something that is novel, innovative and offers practical solution to an existing problem.

Firstly, having the solution to something practical in the field that you find yourself investigating and having first-hand support from a person who already has publications, you can even integrate as a co-author of your research.

I think presentation, practicality and the problem solving nature of a research matters.