It depends on the type of research and purpose of research and how much your topic is already researched. But I can your question generally. RoL should be done in order to see what all has been written about your topic and what is the gap that has been missed. If you are able to identify that by reading only abstracts, then you can. However, you should be able to identify a gap in every article you read

Beyond just describing the sources, a strong literature review should interact critically with them. To grasp important concepts and spot holes, begin by reading a wide variety of literature. To identify contradictions or unexpected links, combine and contrast several points of view. Bring fresh viewpoints by incorporating knowledge from different fields. Consider how idea maps influence your research as you use them to visualize the relationships between studies. Finally, maintain your evaluation up to date as new research becomes available, and be willing to change your mind.

When doing your literature review, it’s important to have a clear and systematic approach. Start by skimming through the abstracts, introductions, and conclusions of the articles to see if they are relevant to your topic. If an article seems useful, read the methodology and results sections more carefully to understand how the research was conducted and what it found. Take notes in your own words on key points, findings, and methods from each article. Look for common themes, agreements, and disagreements across the studies. This will help you see where there are gaps in the current research. Finally, identify these gaps and think about how your research can address them. This process will help you create a thorough and useful literature review.

Best regards,

Akash Vikal

Your question reads a bit as if your reearch topic might still be too broad, as you seem to have too much secondary literature to review. Try to be as precise as possible when asking your research question so that you can find a reasonable amount of papers by others who address this and/or similar questions. You find if a paper fits to your research idea by a. finding good key words for the initial bibliographic research and by indeed skimming through abstracts, intros, conclusions. Once you think a paper speaks to your topic and/or approach, you should read the paper entirely. It makes sense to learn how to read in different fashions, with full attention to detail if it is important, or cursively when you only need to grasp the general gist of a paper.

As already indicated by others, a literature review should relate to your research question, so have a look what the relation is between your approach and that of others, where it differs, adds, contrasts to existing research, and where you build up on it or need it for argumentative support. The latter is what you discuss once you have a grasp on discussions in the field.