So like, I haven't done any designing in ages,

I deleted most of my old stuff because they were very disappointing,

and I practiced with tutorials that you aren't exactly allowed to use in portfolio examples,

are there any ways to build my portfolio? My gallery has a maximum of 6 posters, which obviously is not enough of a variety.

I don't own a graphic shop as my abilities to make certain genres and themes are limited.

I know entering contests are another way but way too often they work by rounds, which I find quite annoying, or the prompts are too specific.