is it too late to invest in bitcoin?
because I saw on the internet that bitcoin is currently experiencing an increase.
Generally, it is never too late to invest in anything. As long as you start as soon as you discovered it, then you are taking advantage of this opportunity to maximize your profits. Remember that the volatility and inflation of BTC is what makes it unique compared to other investment mechanisms present on the market. If you want to earn at least some profits, better be aware of its price once you invested it and sell your coins as soon as you see some profit on your end.
and whether my decision is right or not, to invest in bitcoin?
please guide for all the friends in this forum?
This depends on you but personally, investing into BTC could either be your dream or nightmare given the right situation.
Lots of people have profited from this venture but there were also some that lost thousands to millions. It all depends on the right opportunity and knowing when to sell your BTCs. Though nothing is absolute, there are certain factors that will indicate or at least guide you if you should sell it or not.