Flyers make sense when they contain a specific offer. However, you should always keep in mind that flyers are intended to be distributed. The response rates for offers in flyers are fine if you don't choose too small a print run and do everything right in terms of design and distribution. Flyers are still a proven advertising medium, especially for target groups that are not internet-savvy, and as an advertiser you can expect that years later, interested parties will still be standing in front of you with the flyer in their hand, which until then has survived in a folder or pinned to belize telegram screening a pinboard, and insisting on an offer that may no longer even exist. If you want to make your own flyer and are looking for suitable programs for it, there are plenty of them in all price ranges.
In my opinion, business cards are still a must. They are quick to make, inexpensive, you can always have them with you and you can also develop several versions. They can also be used as “mini flyers”. A good offline advertising medium that of course only makes sense if you are looking for customers outside of the Internet.
Do you remember the film adaptation of Lord of the Rings and the scene where Bilbo complains that he feels like there is too little butter spread on too much bread? I always think about that when I take on too much.
Of course, it is desirable to implement all measures – but nobody is demanding that you do everything at once and at the same time.