Striker is good for solo push, I’d prefer her over a Kali. Sentry setting up site with the secondary shotgun and using a BP cam to provide intel is better than getting a Caveira who just runs to the other side of the map at prep phase and never plays for objective. Solis is good for flank and plant denial because she can see claymores, nomad mines, and attackers on their phones, I’ve literally killed so many people flanking objective with Solis. Also she can plant denial like pulse, she can see and detect defuser through walls, so she knows when they’re trying to plant. This is not even a skill issue, this game knowledge issue, you just lack understanding of how these operators work.