Where Is the Best Place to Invest?

I won't have to pay a lease payment this September, so I now have just under €300 to spend.

What would you invest this money in?

I already have some small savings plans in $HMEF (-2,12 %) & $XDWL (-0,42 %) & $SP20 (-1,19 %)

Should I add to my savings plans here, or invest in something else?

My goal is long-term wealth accumulation with a corresponding return.

I’m a bit undecided here and could use some “crowd wisdom.”