Given reviewer comments, shall I resubmit after the rejection? I had submitted a manuscript to a SCI indexed journal and I received a rejection after 4 months
The reviewers comments stated:
The reviewer stated only 1 correction in the whole paper and wrote the following :
The proofs of main theorems of this paper are straight forward, and the proofs of many results are written in a too elaborate way, not compact enough. As a result this paper is not recommended for publication in XXX.
I am currently in a very difficult situation. I don't understand if I should just fix the error which the reviewer pointed out and then submit it to the same journal.
I am able to fix that error. So will it be wise to fix it to the same journal or it will be a complete waste of time.
If anyone can help me out, I will be very grateful.
There's a high chance resubmission will not work. That's because the review says there are two issues with the paper:

The proofs are straightforward, and
The proofs are not written out well, taking many more lines than necessary.

#2 is a purely presentation issue. #1 can be interpreted in a few ways (see the linked question) but I would guess at the second interpretation in the linked question: the results are gotten in straightforward fashion. This is still not a good comment to receive since it implies the proof isn't interesting even if the result can potentially be.
Note neither of these two review comments critique the scientific merit of your results. In other words, they don't imply your work is wrong. That means the most probable reason your paper was rejected is because it's not interesting enough for publication, which cannot be fixed by improving the presentation.
If you do resubmit the paper, you should do more than fix #2, you should also argue why the result is interesting even though the proofs are straightforward.