Legally, no – except through library lending. Illegally, yes, but downloading torrents of Dragon Ball exposes you to legal notices and viruses.
RTL has historically held broadcasting rights for Dragon Ball Z with Croatian dubs. Their on-demand service RTL Play sometimes offers the first saga (Saiyan Saga) for free as a teaser. zmajeva+kugla+free
Some free preview channels on EON TV (available in Serbia, Bosnia, Montenegro) occasionally run Dragon Ball marathons. Check their "Free TV Guide" section. Legally, no – except through library lending
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