it has been seen that Bitcoin is declining by 5-6 thousand dollars
Bitcoin is not declining. During first hours of the invasion, due to market manipulation price dropped down below $40k and has stopped there ever since.
Bankruptcy in Russia in the face of sanctions.
I don't have any information about how solid Russian economy is but a handful of silly sanctions isn't going to bankrupt the country! Keep in mind that the record of sanctions is still in Iran's hand with a whopping 2000+ sanctions and the longest duration of 43 years, during which Iran went from a weak underdeveloped war torn country to a developed superpower.
Ukrainians make "Molotov cocktails" in an artisanal way, and even civilians, including women, throw and destroy Russia's vaunted armored power with them on the outskirts of cities.
This reminded me of the 10 months and 3 weeks resistance in our Khuzestan province from
6 November 1980 – 27 September 1981 where civilians kept the city from falling. Long story short most of Iranian soil is taken back in only 42 hours after the piece of shit president at the time was impeached, who we later found out had ties with the terrorists.