Hi @Kansai ,
Have you try to change the size of markers from update_traces
.
Example below change the marker size to 30px.
fig = px.scatter(x=[0, 1, 2, 3, 4], y=[0, 1, 4, 9, 16])
fig.update_traces(marker=dict(size=30))
or you can refer to the docs below
Hope this help.