Invalid traffic

Hi,

I scanned my site with Malcare, and its clean.

1)
a) My ad partner Ezoic paused my account because they say that I have invalid traffic.
b) I had to disable Cloudways bot protection because Cloudways support told me that was incompatible with Ezoic. This is going to happen with this plugin too?

Can your plugin help with invalid traffic? What I have to do to stop having invalid traffic?

2) I see errors:
In my error log:
Ex:
[Thu Jan 14 12:23:45.633013 2021] [proxy_fcgi:error] [pid 32339:tid 140589848721152] [client 3.238.165.133:17040] AH01071: Got error 'PHP message: Error Illegal mix of collations (utf8_general_ci,IMPLICIT) and (utf8mb4_unicode_520_ci,COERCIBLE) for operation 'like' de la base de datos de WordPress para la consulta SELECT SQL_CALC_FOUND_ROWS ar3_2_posts.ID FROM ar3_2_posts WHERE 1=1 AND (((ar3_2_posts.post_title LIKE '% Billige viagra original kaufen schweiz.\xf0\x9f\x8d\xbe\xf0\x9f\x90\xb8 www.DoctorFox.store \xf0\x9f\x90\xb8\xf0\x9f\x8d\xbe Billig glucophage 500 ohne rezept kaufen.%') OR (ar3_2_posts.post_excerpt LIKE '% Billige viagra original kaufen schweiz.\xf0\x9f\x8d\xbe\xf0\x9f\x90\xb8 www.DoctorFox.store \xf0\x9f\x90\xb8\xf0\x9f\x8d\xbe Billig glucophage 500 ohne rezept kaufen.%') OR (ar3_2_posts.post_content LIKE '% Billige viagra original kaufen schweiz.\xf0\x9f\x8d\xbe\xf0\x9f\x90\xb8 www.DoctorFox.store \xf0\x9f\x90\xb8\xf0\x9f\x8d\xbe Billig glucophage 500 ohne rezept kaufen.%'))) AND (ar3_2_posts.post_password = '') AND ar3_2_posts.post_type IN ('post', 'page', 'attachment') AND (ar3_2_posts.post_status = 'publish') ORDER BY (CASE WHEN ar3_2_posts.post_title LIKE '% Billige viagra original kaufen schweiz.\xf0\x9f\x8d\xbe\xf0\x9f\x90\xb8 www.DoctorFox.store \xf0\x9f\x90\xb8\xf0\x9f\x8d\xbe Billig g...'

I see spam search from well-known bots:
Ex:
216.244.66.241 - - [14/Jan/2021:12:09:32 +0000] "GET /es/?s= %20apotek%20online%20kodein%F0%9F%A7%B8%F0%9F%8E%8F%20www.Ma yoClinic.store%20%F0%9F%8E%8F%F0%9F%A7%B8%20viagra%20piller% 20uden%20recept%20best%C3%A4ll%20viagra%20p%C3%A5%20n%C3%A4t et HTTP/1.1" 200 12426 "-" "Mozilla/5.0 (compatible; DotBot/ 1.1; https://www.opensiteexplorer.org/dotbot, [email protected]) X -Middleton/1"

Can you enlighten me?

I am struggling I fill that I am hunting in the dark.
Your help will be greatly appreciated.
Thanks in advance
Irene