I have a NX Monorepo with 2 react applications and a shared library between them:
-apps -app1 -app2 -libs -global files for both apps
I have them both deployed on AWS codepipeline with s3 bucket and they share one monorepo repository, but the main issue here is that whenever I push some changes to the repo, no matter if they are in the libs(shared) or the app itself, the pipeline rebuilds all of the applications I have, my expected results are if I change something in the libs for example to rebuild all projects, because it affects them, but if I do a change in app1, which doesn't affect app2, AWS to rebuild only app1.
I read a lot of posts and landed on Lambdas and Lerna js, but everything looks pretty complicated since I am new to AWS

this is an image I landed on, it shows that I need to use lamba functions to check which part of the repo is changed and determine which pipline to rebuild, I would be really glad if someone simpliefies things for me so I can find easier solution or if someone dealt with this problem to help me find a solution.