[2019] Gear Score

I am new to the Division series and need some help/advise. I recently reached endgame and am confused on the gear scores. I keep getting messages stating that I need to raise my gear score to be able to play certain areas but the issue I am having is, is the gear I am getting with the higher scores suck in comparison to what I have equipped already. Like the weapons/gear I have, have a few talents/mods that I feel I need (damage to elites, crit dmg/hit chance, allegro, stop, drop and roll etc) but the gear I am picking up don't have those or maybe only has one. I know I can recal them but I am new to this area as well but I know you can only change one stat and the talent tiers have to be the same. So can anyone give me some advise as to what to do? I know my crit chance is like 10% maybe lower and my crit dmg is right around 40%, my dmg to elites is around 70%. So should I just equip the higher gear score with the mods/talents that I don't want or try grinding for something that I do want? I am trying for a decent lmg dps build. Any help/suggestions would be greatly appreciated by this newb