I use Alacritty lots, and following is my config:
# default is too large on a high resolution screen
font.size = 6
# alt-v is more convenient than the contorted default of ctrl-shift-v
[[keyboard.bindings]]
action = "paste"
mods = "alt"
key = "v"
Nice thing about the tool is it auto-applies the config changes whenever the files are saved... no need for a restart.