Let's break your question into two parts:
Do You personally feel that Fiat Currrency losing slowly puraching power?
There is no brainer in that. In every country where inflation rate is positive, fiat currency of the respective country is surely losing purchasing power. The supply of currency is increasing more than the prices goods and services covered under CPI making currency less and less valuable.
I do feel that, but the problem is i cant buy groceries food and daily needs with Bitcoin first i have to Exchange my btc to Fiat, so the Bitcoin and gold is Not really Solution for that problem!!
I disagree with you. Even though you can't fulfil daily needs with Bitcoin but it is perfect instrument to park excessive funds. For example, I have $500 and don't need them for a while, I can put them into Bitcoin and withdraw whenever required. This way, rather than keeping money idle and seeing its PP fall, I can see it growing. Converting BTC to fiat is not very time consuming process. It only takes 20-30 minutes. So investment in Bitcoin is just like ready money.