clip studio pain just allows me to make gifs by letting me have access to a timeline
try looking up if your program can export gifs, if it can, then obviously you can make gifs, ya just need to look into how.
in terms of file size, if your comic isn't textured (like pastelle) and uses hard shapes and lines with little color transition (cell shading, inked lines) then if you can find the option, turn off dithering, or at least go on EZgif and upload it, then go to the optimize section and go for the optimize to reduce dithering. (though EZ gif may cause some occasional problems when uploading them to tapas)
dithering basically means that the gif tries to process everything and put it into the gif, meaning it will keep the color transition (or gradient)/small detail at the cost of size, but for cell shading, there is hardly any loss in art quality or how it looks all while massively reducing the file size, if you turn dithering off.
also, consider doing what I occasionally do and just break up your strips, make the non-animated sections of the strip a PNG and have the moving parts be a gif, that can help you fit more without going into the limit.
otherwise, take note that a gif is looped, try to take advantage of that.
if an animation can be looped, and it's necessary that it is animated, go for it.
when gifs don't loop, it can be a little jarring without a pause at the beginning or end.
if ALL else fails... youtube... be like "here's today's panel, but its on youtube"