It seems to have become a national hobby in the Baltic states to talk about this.
Why don't you let the past be the past and look to the future? Latvia and Estonia have a got a lot going for them, and some of those things are actually due to the USSR times. (I won't make the mistake of including Lithuania again because I don't know a lot about that).

I have never discussed it with Latvians and Lithuanians before (except now) but Estonians are always talking about it.
Several times I've heard Finnish and Swedish people tell them to just shut up. That is perhaps insensitive, but lots of Finnish and Swedish people went to Estonia in the Soviet times (my dad for example) and things looked fine. Plus everyone has heard the complaints so many times.

Estonian SSR was only marginally worse off than Finland (and it's always been that way, so that was nothing new for the USSR era) before the 1980s, and in Estonia everyone had a job during the Soviet years, in contrast to Finland which had horrible unemployment and quite bad poverty, causing almost a million to emigrate. Estonians were able to go to Finland on holiday during this time. If it was so terrible, they could have stayed, but practically nobody did.

The problems with the USSR are already well known and for the Baltic states, most of the bad things happened in the 1940s and early 50s, and after the death of Stalin, things calmed down. Some good things DID come out of the Soviet years - for example lots of good public buildings and structures, and high level of education.

Scandinavia for example was full of goodwill and wanted to help in the 1990s. Also the EU. But there was so much criminality coming from there and it was like "we just want aid and compensation and compassion, but we are going to steal your cars and rob your houses".

The Nazis did not build schools and hospitals in the countries they invaded! It's a different situation.

Remember that the Soviets / Russians thought that they were doing the right thing towards the Baltics. Liberating etc. They thought they were helping working class people and would build communism etc, etc. Good goals, as far as they were concerned. And the Baltic states were not rich countries before the Soviet era. A lot of people might have got better lives as USSR citizens than they otherwise would have had.

And yes, everyone already knows that this came at a wrong/immoral price of some being deported and that religion was wrongly supressed etc.

Also, all the Soviet SSRs were run by local people in practically all important places, weren't they? It was not like Russians from Moscow came in and took over the country. Lots of local people joined the communist party and generally participated in the socialist state.

Perhaps it's more convenient to just say "it's all the Russians fault" than admit that a majority probably (I don't know, but I'd guess) went along or actively participated in USSR life. Either because they were cynics or because they genuinely saw that some good things came out of it, or believed in the ideals.

My point is: You are in the EU, you are in Nato, you've got your independence with practically no bloodshed. Things could be a lot worse: The USSR had already educated people very well, looked after their health and got them a job and somewhere to live. Despite this, everybody sympathisizes with what the Baltic states went through.
But now it's time to look to the future!