Your understanding is correct. From V=IR .$V=IR$ if voltage is The samestays the same while resistance is increased increased, the current should be decreased.
But Ifif you have heard of another equation ,
$I = \frac{Q}{t}$
If current(I) is increased , and the charged(Q)charge $Q$ is fixed (Number of charges areCharge is fixed if the power supply is from power cells like battery). Time will be decreased.
Which means that
The charges are moving faster!! Because numbers of charge are fixfixed by the size of battery.
Imagine 4a four lanes road. Then , in 300 meters ahead , there is a construction for road maintainancemaintenance for 3three lanes. Making only one lane available to pass. Cars from 4 lanes must combine into one lane, making traffic jams and cause everyonreveryone to get home slower.
4lanes road=Normal wire4 lanes road = Normal wire
Construction=ResistorsConstruction = Resistors
1 lane road and traffic jams=Problems cause by resistance.1 lane road and traffic jams = Problems cause by resistance.
Cars= ElectronsCars = Electrons
Home= + terminal of batteryHome= + terminal of battery
Like some phone battery have 10000mAh. Which actually is the value of Q$Q$ but in milliampereshours not ampereseconds * hours not ampere * seconds. So 1 mAh is equal to 5/18 CulombCoulomb.
I hope you understand my explanation.