Bought 0.3 bitcoin 4 months ago(when it was 10k$) but lost it all via gambling...
it was supposed to be for long term savings but i fucked up

Oh! sad to hear this one and this is why we should really be mindful towards our actions.You should always separate the amount which are intended for gambling and which are intended
for investment. Never ever consider on pulling off those funds just because you do like to gamble today.Always mind off on the profit making opportunities for longer terms.
Common problems or situations that would really feel you regret is on spending those amounts or you do just simply missed out on buying and holding it while its still cheap
or even selling out early on the fear for the market to get crashed again.