I like Classic Words too but only ever play against the computer. Like Lisagran, I wish that there was the option to change to an English dictionary. However, Scrabble as I used to know it has evolved as has the language we use, like it or not.
BL (before lockdown), we (DH and I) spent an evening with some acquaintances. They brought a Scrabble board with them and proceeded to trounce us. They used American spelling, all the newly 'allowed' Scrabble words - there are now over 100 2 letter words in the English (2019 SOWPODS also known as the Collins Scrabble Words dictionary), ew, joined the list recently.
Are we poor losers? You bet we are! I'll stick with beating the Classic Words computer using my, old-fashioned english.