If you miss the old days, try the bus from Vilnius to Minsk. It’s a full on border control just like in the times of the Soviet Union. Only 35 km away from an European Union capital city.

"Back in a days it was a lot, lot slower and more detailed."

Oh for sure, I have childhood memories of the really dark time, but it is way worse now, than it was back in 2015. I missed flixbus connections because of intense checks and changed vacation plans avoiding long waiting times at borders within EU (my recommendation, cross at night).

Your current state is how Canada used to be from the US. Early 2000s we just showed drivers licenses. Went camping, up to Nelson. Then it got less friendly (US side) then passports required. To the point we stopped going. It sucks when politicians make our world smaller as in 'we have access to less' instead of smaller as in 'it's a small world after all'.