Belgium missed two European deadlines for the 5G roll-out in 2020: 30 June 2020, the date set for allowing the use of 5G in the 700 MHz band and 30 December 2020, the deadline for 3400-3800 MHz and at least 1 GHz in the 26 GHz band (provided there is sufficient demand from the market, which is not the case in Belgium today).
Most European countries did make the 5G pioneer bands available: