1 BTC for gambling to possibly turn into a lot more BTC
2 BTC to buy altcoins on exchanges
3 BTC to exchange for fiat to buy stuff
4 BTC to hold onto
I would say that don't allocate a budget in gambling on that amount. 1 Bitcoin is already big for putting it up on gambling.
It is better to add it up to holding budget or trading budget.
That is correct gambling is not profitable and do not invest on that you only lose all your bitcoin there. Its better to hold and wait for the good profit because the price of bitcoin will going to increase in the future. 10 bitcoin is huge amount it will give also huge profit in the future.