How can we increase our chances of successfully robbing the construction site? Should we improve our intelligence at university or something else?

you can raise your chances of success for any job through raising your intelligence, or by succeeding the job itself (local job experience), succeeding other jobs (global job experience) or by getting the "failing forward" upgrades with plata, which will give you a bit of local job experience even if you fail.

Ok thank you🙏🫶