you are misled and you are also misleading others too with your topic here.
The fastest way to increase your bitcoin is through gambling. Its unstable but if your an expert to it youll be rich overnight.
gambling is NOT a way to increase your bitcoin. it is risky and because of many factors like chance and house edge you will be always at a disadvantage and lose in the long run.
The second is investing on onpal and hyip. You must be an early bird to catch early bitcoins later on it will collapse and nothing will be left of you.
there is nothing saying if you catch a scam (hyip) first or second you will be successful. for all you know they can never even pay the first person.
it is a scam after all.
The third is investing on mining, make sure to select mining site that are on business 3 or more years already.. small income but harvest it 5 years from now. instant millionaire haha
none of the cloudmining (mining site) has been profitable so far and 90% of them are scam ponzi scheme instead of a legit service.
Fourth is hoarding, just let your btc sleep in your wallet it will go up in time as btc rise up in value theres no stopping it.
putting bitcoin to sleep in your wallet will not increase it as your subject suggests!
Lastly, engage in trading, dont trade overnight but wait every halving of altcoins before exchanging or trading that way your income is at best.
this is the only decent thing you have said so far which is also not the easiest method in the world. it is hard and risky and although it may seem profitable if you don't know what you are doing. you lose more than you can earn.