It 'seems' very complicated. Maybe it is not, but I at least struggle with it.
Yeah my dear friend @tarazkp this is not complicated and actually very simple indeed.
So without further ado, let's go straight to the point.
First of all, follow these steps below in strict order:
1- Download and install a BTC Desktop Wallet (cold wallet) in your PC. There are many good out there. But for simplicity, low learning curve, easy to learn with a nice/friendly UI to navigate through its internals mastering it in barely few minutes and with many powerful features as a Multi-asset Wallet to even exchange your btc for many other different altcoins right within the own wallet with low fees. I will recommend you Exodus. IMO they are very reliable developers who constantly are working on furbish the app, debugging, improving and updating the software regularly and launching new releases continually. (There are even rumors that Steem could be soon another altcoin & asset to hold and trade right into the wallet) So, give to this one a try!
2- Use Changelly and/or Blocktrades to send, sell and convert your Steem/SBD to BTC or any other altcoin of your preference in the easiest and fastest way possible. There are many good tutorials on steemit describing step by step the easy process for both. No need to trade anything. You just sell your Steem/SBD to them and send the BTCs straight to your Exodus wallet.
3- Open right away an account on Localbitcoins. From your IP, the website should automatically recognize that you are visiting from Finland and will show you in your browser the internal local marketplace for your intended transactions. Through operations of Buy & Sell within the website you will be able to convert your BTC in local currency to your fiat bank account in a blink.
In this case, with the wallet of Localbitcoins unless you are trying to convert your Steem/SBD to BTC for instant operations to get €uros in your fiat bank account immediately, rather send the BTCs to your Exodus wallet address to hold them more safe there if you are not in a hurry to obtain €uros. It is not advisable to maintain large sums of btc in any web wallet. Not even on Localbitcoins unless you hold these there for immediate transactions.
I hope these little suggestions can be of some help and usefulness for you mate. It's the least I can do to thank you for your very valuable and generous help to me.
A brotherly & very big hug to you my friend. :)