Given reviewer comments, shall I resubmit after the rejection?
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.