In the top left hand corner -> click the "Edit profile" link.
You can also go there by https://mas.to/settings/profile.
-> Preferences -> Other -> Filter languages
-> select English and తెలుగు

• https://mastodon.help/ - mastodon help
• https://changelog.complete.org/archives/10124-how-to-join-the-fediverse-and-cast-off-the-attention-economy - what motivated me to join mastodon in the first place
• https://docs.joinmastodon.org/ - documentation