Click 3 bars in the upper right corner of ur steemit profile, scroll down to vote for witnesses.

Upvote the witnesses u want to support. (U will need to input ur Active key).

Just make sure the witnesses ur voting for are not the Tron accounts. If u click on any witness name, it’ll show u their steem account which if created feb 2020 it is a tron account...

Hope this is clear and helps 🤘