Hey Palves
A quick google search on Wix search database will show you this forum post giving you the code needed which I know ive used before.
https://www.wix.com/corvid/forum/corvid-tips-and-updates/example-search-a-database
I will advice reading through it and setting some time off to actually understand what is going on instead of trying to just copy and paste.
best regards
Claes