Best suggestion I have is to buy yourself a decent screwdriver or driver bits, then when it starts getting worn and slipping easily throw the bit/driver away and use a new one. You can get away with using a worn Phillips driver for a long time past it’s prime but you’re just making life hard for yourself by doing this.

Also make sure you’re using the correct size and type of bit, I’ve seen plenty of people struggling with Phillips heads because they’re doing something like using a ph1 bit on a ph2 screw or using a pozidrive bit on a Phillips head.