Calculate loyalty programs for customers

We need a specialist in the calculation of loyalty programs. You need to calculate loyalty programs for customers of the laundry service. You need to come up with 5 combinations of possible loyalty programs with a mathematical calculation of their possible effectiveness. I mean. The task is to calculate the maximum efficiency of the combination of receiving bonuses by the client to increase the total sales and motivation to score a certain number of washes within 30 days.
The laundry service provides the following services: washing, 6 kg / 12 kg, drying 6 kg / 12 kg, selling detergent. It is necessary to come up with possible combinations of these services to create a loyalty program for customers with a mathematical justification for their effectiveness.
Background:
Washing 6 kg/12 kg; cost 110 ₽ /160 ₽ ; cost 38 ₽ /55 ₽
Drying-6kg/12kg; cost 70 ₽ /100 ₽ ; cost 30 ₽ /45 ₽
Sale of detergent (washing capsule); cost 40 ₽ ; cost 18 ₽ ;
Time limit of 30 days;
One customer uses the laundry 1.4 times every 30 days.


As an example, the following loyalty programs are currently used:
Ah. 1+1+1=4: Every 4 washings are free for the customer. Keep a record of paid washing for each client, after 3 washing provide 1 free washing. The duration of the action is 30 days from the date of the first washing. After 30 days, paid washings that did not go to free burn. At the first registration, the customer immediately receives 2 paid washings. The action is carried out only with washing machines.
B. Clean Thursday: Every Thursday, the customer can change the standard washing rate to a discounted rate by selecting the Clean Thursday action from the "Participation in Promotions" menu.
V. The 3rd free drying campaign works similarly to the 1+1+1=4 campaign, only with dryers.