I have storage but says i have none on a nintendo switch

im a Minecraft player on Nintendo Switch and it keeps saying i have no storage left on my device but i have 51 gigabytes left, ive deleted stuff and now all i have is my 2 worlds which stupidly laggy because i have no storage and I’ve seen people not even able to play the anymore because the have “no storage”. Please is the re anything that can be done so me and many others can fully enjoy the Minecraft experience on the switch