Improve Google Ads Quality Score

We have been running our Google Adwords account for over 3 years and have done everything to make sure our keywords have a high quality score but many of our keywords are ranking 5 out of 10 for quality score.

We would like the keywords to rank 8/10 or higher.

We're in the Web Design industry so we target keywords such as website design, web design, web designer in Australia on the search listings online, no display ads.

We are looking for someone who has experience in increasing Google Adwords keyword quality scores and making the account more efficient with higher CTR and lower CPC

Experienced people apply only, if not experienced we will not reply.