Estonia still lays claim to Ivangorod due to irredentism. Ivangorod used to be part of Estonia for about 20 years before Russia took it back in the 1940s during WW2. It is likely Estonia will invade Russia for Ivangorod if they get the opportunity to do so which is unlikely in the next 500 years.
https://uawire.org/estonia-put-forward-territorial-claims-against
The other Baltic states Latvia and Lithuania are Slavic countries like Russia and have good relations with Russia. Estonia is not an Indo European country let alone Slavic so they are hostile to Russia.
In the current environment Slavic != pro-Russia
Ukraine is ready to ditch Russia