Lightroom Classic

and, if you decide to cancel, make sure you do so within 14 days of starting the trial.

make sure you're aware of the cancellation terms by selecting your plan type (at the top of the page here), https://helpx.adobe.com/manage-account/using/creative-cloud-subscription-terms.html

and for info on how to cancel your subscription, this page describes the few steps involved, https://helpx.adobe.com/manage-account/using/cancel-subscription.html

p.s. if you're contacted by anyone (via email or private message), it's much more likely to be a scammer than an adobe representative.

if you're unable to follow the steps described, check your account (https://account.adobe.com) for a payment problem. all payment problems must be resolved before cancellation is enabled, https://helpx.adobe.com/manage-account/kb/fix-failed-missed-payment.html

https://www.adobe.com/creativecloud/photography/compare-plans.html

You want the Lightroom (1 TB) Plan, it is $11.99 per month in US dollars. I do not know what the price is in your country. Please download the Free Trial to give it a try and see if it works on your computer, if you don't cancel you will be charged the purchase price which is an annual commitment, or if it doesn't work you can cancel and not be charged.