Hello again Martin.
I need to get attention from searcher.
With those colorized symbols ⭐ ✅ ⌛ I have more chances get attention to it.
Maybe this isn’t best practice

You don’t believe it but I’ve recently read it))

According article this function rule conversion from utf8 to utf8mb4:
maybe_convert_table_to_utf8mb4( $table )

But instead I use a direct mysql command:
ALTER TABLE $table CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci

for certain tables.
More over, I’ve somewhere read a point about latest utf8 support that is:
utf8mb4_unicode_520_ci

and now I’m thinking about converting to this type of collation