Is it difficult to keep the bar in the correct position? Your shoulders or mid back might need some mobility work. Is it difficult to keep your heels on the ground? Your ankles might required some attention. Do your wrists feel like they’re going to implode? Take some weight off the bar and then consider a regimen of wrist strengthening and mobility.
Doing more reps and weight is fun. Strive to increase load and volume. Prior to that, technique is essential. If the point is a lifetime of healthy movement (and I think that is the point) then don’t race to put on weight and ignore all the diagnostic information that the overhead squat provides.