Soldato
Shall I go lighter? Tbh I'm not sure the weights will come off they seem to be rusted on...
Not about going lighter or even heavier, you need a routine. Something 1 dumbell isnt going to provide as you will simply outgrow it in weeks.
If your serious get a gym membership, where you can use real equipment and even two dumbells! . Allowing you to increase/decrease weight according to your limits and not the limit of one piece of equipment.