Is it safe to remove contents from var / swapfile / tmp?

The thing is /home has only used 11GB whereas /var uses 14GB, /temp 11GB and /swapfile 2.4GB Can I safely do sudo rm * in the last three directories? Contents from sudo du /var | sort -n | tail -20 679376 /var/snap/microk8s/common/run 683324 /var/lib/docker/overlay2/3ecccaf38f1f0837b174563be1ce108c862264359047750fd3daceae9a015182/diff/usr 683424 /var/lib/docker/overlay2/2313ac4c63c3915860ed097576334e5167ca94569ebfafd585f30d456dd1e33b/diff/usr 735748 /var/lib/docker/overlay2/3ecccaf38f1f0837b174563be1ce108c862264359047750fd3daceae9a015182/diff 735756 /var/lib/docker/overlay2/3ecccaf38f1f0837b174563be1ce108c862264359047750fd3daceae9a015182 735840 /var/lib/docker/overlay2/2313ac4c63c3915860ed097576334e5167ca94569ebfafd585f30d456dd1e33b/diff 735848 /var/lib/docker/overlay2/2313ac4c63c3915860ed097576334e5167ca94569ebfafd585f30d456dd1e33b 879292 /var/snap/microk8s/common/var/lib/containerd 954104 /var/snap/microk8s/common/var/lib 1161476 /var/snap/microk8s/common/var 1451924 /var/lib/docker/volumes 1840856 /var/snap/microk8s/common 1878948 /var/snap/microk8s 1879156 /var/snap 2923700 /var/lib/snapd/snaps 3967480 /var/lib/snapd 4971824 /var/lib/docker/overlay2 6437580 /var/lib/docker 10813292 /var/lib 12804788 /var