Change factor level in map in R

Question

I know this question has been asked before and I have seen answers in literature too. Still, I cannot get the code to work for my specific purpose and I hope someone can help me. I am creating maps in R and it often happens that some points on the map are covered by bigger ones. I need to change the order of the factor levels with lower counts.

The code for the map looks like this:

rnaturalearth::ne_countries(scale = "medium", returnclass = "sf") %>% 
  ggplot() +
  geom_sf() + 
  coord_sf(xlim = c(-10, 5), ylim = c(36, 44), expand = FALSE) +
  geom_point(data = cm3,
             aes(x = x, y = y, color = factor(motif), size = count),
             na.rm = TRUE) +
  theme_minimal() + 
  xlab(NULL) + 
  ylab(NULL)

The resulting map looks like this:

It happened now that the pelta motifs with a pink dot are covered by other ones. Is there a possibility to change the factor levels within the code for the map or do I have to change the dataframe prior to that?

I tried to change the order manually by modifying the code like this:

rnaturalearth::ne_countries(scale = "medium", returnclass = "sf") %>% 
  ggplot() +
  geom_sf() + 
  coord_sf(xlim = c(-10, 5), ylim = c(36, 44), expand = FALSE) +
  geom_point(data = cm3,
             aes(x = x, y = y, color = factor(motif, levels = c("pelta", "floral", "other", "boat", "crescent moon")), size = count),
             na.rm = TRUE) +
  theme_minimal() + 
  xlab(NULL) + 
  ylab(NULL)

And I get the following result which I am not happy with:

The code didn't give me what I want because I know there are two or three points representing the pelta motif which should appear in the north of the peninsula. But they don't appear. I really just want the smaller points to be displayed over the bigger ones, so that they are visible. Can anyone help me? Thanks in advance!