I mean the first film established what was a great setup for further stories. But that every time they go back they without fail decide to go back with weak equipment, untrained people and a plan that makes no sense and every single time ends up dismal failure is just... urrggh.
They are freaking dinosaurs, DINOSAURS ffs, this isn't the 20s, private military actually exists. You can get an attack boat loaded with cannons and crap to sit off the coast, you can bring turrets and explosive/anti armour weapons and set up a secure base that can actually kill big ass monsters if they attack and you can send out well trained guys with powerful weapons, tanks and anything else to go track down raptors or whatever. But it always ends up with some scientist and some kid being involved... and for some reason security or tracker types who have slow firing tranq guns, and cattle prods as if none of these guys have a clue what dinosaurs are, how big they are and how utterly stupid going up against them with that and a few guys with assault rifles. You can't sneak onto an island with dinosaurs, you go in hard, with guys with rocket launches, and tanks, and attack helicopters, etc.
There are loads of opportunities for films in which the dinosaurs get out, or they feel they have to go back in because monitoring shows they've started breeding and they fear they will get out, but instead every attempt is some ridiculous plan to go back in that's obviously going to fail with the worst people and equipment possible and every film is more irritating than the last.