Do sports or play sports

We normally say playing.

We normally don't use 'playing' for a one person sport, eg.

X I like playing skiing. X

X I like playing mountain climbing. X

X I like playing ice climbing. X

When there is a head to head competition between two people,

O I like playing tennis O

or more than two people, as in a team sport, we use 'playing'.

O I like playing soccer. O