In Jainism, our main worship is only of:

• Arihant Bhagwan (Tirthankaras)
• Siddhas
• Acharyas
• Upadhyayas
• Sadhus–Sadhvijis

Ganapati / Ganesh is not a Jain dev (deity) in our core scriptures.

However, in practical life:

• In some Śvetāmbara Jain families and temples, Ganapati is kept or remembered at the start of new work or ceremonies as a lokik (cultural) dev, believed to remove obstacles.
• This is more of a social / cultural custom, not a core Jain dharmic requirement.
• Among Digambar Jains, Ganapati worship is generally not part of regular Jain temple or ritual practice.

Important points:

• Jain moksha-marg is only through Tirthankaras and self-effort, not by pleasing any dev for worldly gains.
• Even if some Jains bow to Ganapati culturally, it does not replace or equal the worship of Tirthankaras.

You can read a simple explanation here: “Do Jains worship Ganesh?” “Who is Ganesha according to Jainism?”