If anyone could just “learn sensor jutsu” and “invent their own form of sensory jutsu”,everyone would have mastered sensor jutsu and use them daily.
There is a fucking reason why sensor type shinobi compared to ninjutsu and/or taijutsu type shinobi are the minority.
Do you see how Tenten doesn’t use sensor jutsu just like she does not use lava release? There is a reason why.
Do you see how Shizune doesn’t use sensor jutsu? Just like she does not use wooden type jutsu? There is a reason why not.
Do you see how Tsunade doesn’t use sensor jutsu? Despite Tsunade being smart and talented and extremely experienced? There is a reason why she doesn’t.