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Budget Switch recommendations.
(lemm.ee)
Have you checked out TP Link switches? Not sure if they are easy to buy in Europe, but here in the states they are a pretty budget friendly option.
I'd do a more in depth search but my signal is limited because Im traveling right now.
I am looking to buy this one when available and then combining it with another switch for 1gbit connections https://mikrotik.com/product/crs310_8g_2s_in#fndtn-downloads also this site has tested a lot of them https://www.servethehome.com/the-ultimate-cheap-2-5gbe-switch-mega-round-up-buyers-guide-qnap-netgear-hasivo-mokerlink-trendnet-zyxel-tp-link/
I would take a hard look at used HP Enterprise or Cisco gear. HP 25xx series are niiiice.