Can you say no to anal sex and oral sex?

Do married guys cheat because of saying no if its something you aren't interested in?

you don't want to have anal sex but partner asks repeatedly you said once a year to compromise but in reality don't want it at all.

You used to give awesome blowjobs but his oral sex skills suck and you just don't like or want to give blow jobs anymore is that okay

Vaginal sex and role play different positions are a go

The other entrances are no been honest about that since dating.