You are talking about 2018-2019
jan 2018 : 1 USD = 3,57 Turkish Lira
dec 2019 : 1 USD = $5,94 Turkish Lira
on the other hand , President ERDOGAN's insistence on an unorthodox economic theory that "high interest rates cause inflation" led to aggressive interest rate cuts that severely destabilized the Turkish Lira and sent inflation skyrocketing in 2021
The exchange rate collapsed from around 7.4 TL per USD in January to an unprecedented 18 TL per USD by December
20 jan 2021 : 1 USD : 7,4 Turkish Lira
20 dec 2021 : 1 USD : 18 Turkish Lira
President ERDOGAN had a big mistake in 2021
And as a result of this huge mistake, inflation remains high... even though it dropped from 85% to 36%.