I think you shouldn't be doing any olympic movements unless you got a couch to teach them to you. Learning them from the internet is way too hard for the average person and could result in injuries. You can switch them with weighted chin ups. If your press isn't progressing it's probably because your minimum weight jump is 2.5kg. If you can't get plates for micro loading then adding weight to the press will be really hard since 2.5kg jumps are huge for press.