Does anyone have tips on using a handheld bidet?

The doctor suggested I use a bidet and no toilet paper/wet wipes. I bought a portable one (https://a.co/d/0dxyuH2u) while I wait to get the external spray attachment (https://a.co/d/04mqKCqO) installed. I've been bringing it in from the back which I know they say for females it should come in from the front but I'm finding it so awkward to do that. Is it because of the portable design (it's so bulky) or how should I do it? Would this be easier with the shower bidet I bought? But the problem I am facing now is that after I use it and go back later to pee and wipe there are small poop particles (like tiny dots) in the front and now I'm freaking out because I'm somehow pushing it to the front. How to prevent this from happening? Right now I've been going in for a shower after but it's getting annoying to do if I go more than once and I also don't want to dry out my front areas from over washing. Any suggestions because I have to keep using the bidet?