Which bank to use as a savings account?

Hi everyone, before this is misunderstood, it's not about me wanting to save all my money in one account, I also have portfolios, ETFs and whatever else there is. Now I would like to just set aside €50 or €100 for a few savings goals. So far I've used a money box... the problem, of course, is that every time I reach my savings goal and buy something online, I have to pay fees again when paying in (thanks Sparkasse, really useful